Posts Tagged ‘Batrachostomus moniliger’
Sri Lankan Rainforest Forays in the Time of the Pandemic
Collage of Sri Lankan (mostly) endemic birds seen in eastern and western Sinharaja. Clockwise from left: Layard’s Parakeet (Psittacula calthrapae), Sri Lanka Spurfowl (Galloperdix bicalcarata), Sri Lanka Frogmouth (Batrachostomus moniliger) and Sri Lanka Blue magpie (Urocissa ornata). The Frogmouth, of course, is also found in the Western Ghats of southern India.
Aside from the IA field study last September (described in the previous post) I have had the opportunity to take several other short visits to Sinharaja. Two of these were to the Kudawa side and the third was a visit to the Rainforest Ecolodge in south-eastern Sinharaja. These trips were mainly designed for my mind and spirit to get a break from city life. One was a solo trip while two involved time with Lenny and our friends Nirosha and Rashmi Bopitiya. Of course, there were opportunities to look for and photograph birds, amphibians, reptiles and plants in the rainforest landscape.
Eastern Sinharaja sub-montane forest with flowering canopy.
South-Eastern Sinharaja
The south-eastern side of Sinharaja is far less visited and in my personal case it had been several years since I has last been (see WWW blog post from 2012 and 2013). Lenny and I took a father and son trip at the beginning of our winter holidays. The drive is longer than the Kudawa entrance (about four vs 2 hours) but the site and situation of the Rainforest Ecolodge makes it worthwhile. We had three nights at a time when visitation was relatively low and there were reasonable deals to make it an attractive place to stay. We did a few short hikes abut mostly enjoyed simply walking on the access roads through healthy montane rainforest. I am drawn to the exquisite sub montane forest in this area and there are numerous places to get canopy level perspectives. During our stay several key trees including Shorea trapezifolia were in flower. We had several good walks with the Rainforest Ecolodge naturalist who helped in the discovery of several key frog species seen in this post. Otherwise Lenny and I wandered on the access roads where we encountered several mixed-species flocks. The same flocks flew right through the hotel area and one didn’t have to go too far to see many of Sri Lanka’s spectacular endemic birds.
Scenes from the Rainforest Ecolodge in south-eastern Sinharaja. Set on the edge of a tea garden at 1000 meters, the hotel utilizes recycled containers and minimalist steel structures to give visitors a unique and intimate sense of the sub-montane rainforest.
Selected frogs from Sinharaja (From top): Reticulate Tree Frog (Pseudophilautus reticulatus) and the Cheeky shrub frog (Pseudophilautus procax) from the Rainforest ecolodge area. Common Hourglass Tree-frogs (Polypedates cruciger) laying eggs near Kudawa. Sri Lanka rock frog (Nannophrys ceylonensis) at a stream near the Rainforest Ecolodge. Help with identification and lighting thanks to Vasanth at the Rainforest Ecolodge. Dulan Ranga Vidanapathirana helped confirm species for me and I have loaded these up on iNaturalist.
Clockwise from left: Sri Lankan Giant Squirrel (Ratufa macroura) in south-eastern Sinharaja, Purple-faced langur (Semnopithecus vetulus) also near the rainforest ecolodge. Strobilanthes lupulina on the road east of Kudawa village.
Slaty-legged Crake (Rallina eurizonoides), a rare winter migrant visitor. This one was hanging around the kitchen drain at Martin’s Forest Lodge. This was my first sighting in Sinharaja, but apparently they are seen in many of home gardens during the winter season.
North-Western Sinharaja
The Kudawa entrance has been, of course, much quieter because of the COVID situation. On two trips there in December and March I focused on looking for birds and reptiles. On my solo trip in late December I walked with my assigned guide, Ratna and explored out to the research station and then up to Moulawella peak. The hikes were good but my best sightings came from Martin’s where I spotted several rarities while having tea and appreciating the space and solitude. A rather shy Slaty-legged Crake (Rallina eurizonoides) stepped out in the afternoon to look for something to eat in the drain outlet. My camera was set up and ready to go such that I got a few brief shots without my tea getting cold. Another highlight was spending time at Ratnasiri’s hide. This neighbor of Martin is building a small cottage on the road above Kudawa and has set up a simple hide where visitors can observe Sri Lanka Spurfowl and other difficult to see endemics. I had an early morning spurfowl encounter that produced dark photos and an exhilarating sound recording (click below).
Village & forest scenes on the edge of Sinharaja (from upper left): Pepper (Piper nigrum) from a home garden drying, a gourd for tapping Kithul, Raja (Anoectochilus regalis) orchid, road passing through Morapitiya, vine (Coscinium fenestratum) and leeches on my sock.
Collage of Sri Lankan endemic birds seen in eastern and western Sinharaja on the three visits. Red faced Malkoha (Phaenicophaeus pyrrhocephalus), Serendib Scops Owl (Otus thilohoffmanni), Green-billed coucal (Centropus chlororhynchos), Sri Lanka Scimitar Babbler (Pomatorhinus melanurus), Sri Lanka Gray hornbill (Ocyceros gingalensis) and Sri Lanka Green Pigeon (Treron pompadora).
In March Lenny and I came back to Kudawa and Martin’s with our friend Nirosha and her daughter Rashmi (from OSC’s Class of 2021). We enjoyed a morning of birding with Thilak, the superb independent guide who has established himself as one of the most knowledgeable birders in the area. Sure enough, we had fine sightings of a nesting SL Gray hornbill (Ocyceros gingalensis) and Chestnut-backed Owlet (Glaucidium castanotum) and mixed-species flock. On our return Thilak found a roosting Serendib Scops Owl (Otus thilohoffmanni) which we quietly observed and then photographed. Once again it was found in mixed Pinus caribaea and secondary forest. I find it intriguing that this rare bird species, so new to science, is found in a habitat that has been a monoculture plantation and is now recovering on its way back to being healthy rainforest. This observations seems to support the idea that Pinus caribaea are good intermediate species to establish rainforest in retorsion efforts (see Ashton et al).
Otus thilohoffmanni strip with a 600mm lens in RAW.
Final choice of the 200-500mm lens series Serendib Scops Owl (Otus thilohoffmanni)
A male Lyre-head (or Hump-nosed) Lizard (Lyriocephalus scutatus) in Sinharaja rainforest. This large species is surely one of the most resplendent of Sri Lanka’s many endemic lizards. It is also completely unique (it has its own genus) and there is nothing else in South Asia that looks like it. I’m always on the look out for them when in the rainforest and it has been nearly 10 years since I last saw a male (on the epic Kudawa-Sinhagala-Deniyaya trek in 2012 see https://ianlockwood.wordpress.com/…/a-path-less…/ ).
This individual was found by the sharp-eyed genius guide Thilak Ellawelage at the end of a day with many great bird sightings. He spotted it in the forest above Martin’s and I was able to photograph it both that afternoon and then next morning. Help with holding the strobes was provided by Nirosha Bopitiya (afternoon) and Ranjith (morning), the FD guide working with us. This is a morning shot taken with a 105 mm lens and two Godox strobes (one in a cumbersome but quite effective studio diffuser).
For the last several trips I have been on the lookout for the endemic Hump(or Lyre) Nosed Lizard (Lyriocephalus scutatus). I have had good sightings in past years but I’m working on better lighting with multiple flash units and a diffuser. Thilak spotted a mature male near to Martin’s and alerted us to it as he was on his way down in the evening. With the help of Nirosha I was able to get a few images that evening and then I came back and found it on my won the next day for another session. Earlier in the year I had bought a Beetle Diffuser from Varun GB in India and this was my first attempt at putting into action in the field. The results are good but later experiments showed that I need to have the flash unit closer to the subject.
Sri Lanka Spurfowl (Galloperdix bicalcarata) at Ratnasiri’s hide. For many years this has been one of the most difficult endemic birds to photographs. That all changed when guides realized that spurfowl were regular visitors to home gardens drains on the edge of the forest.
On our final morning we walked down to Ratnasiri’s to look for the spurfowl. There was another group of Sri Lankan photographers led by Chintika De Silva so we gave them a chance and then spent time in the hide later. While we were waiting Rashmi spotted two large frogs climbing up a tree. These turned out to be part of a group of Common Hourglass Tree-frogs (Polypedates cruciger). Although its name suggests that it easy to see (its conservation status is “least concern”) we enjoyed a really unique gathering. A total of six individuals put on a show of courtship and then mating in broad daylight. The smaller males, clinging to the back of the females whipped up and fertilized the eggs being laid over a small spring. That evening, fulfilled by our many sightings and interactions with the people of Kudawa, we returned to Colombo. On our drive out we passed under dark cumulonimbus clouds and, soon enough, a torrential downpour brought relief to the hills. It was the kind of heavy rains that kicks off the life cycle for the tree-frogs we had been observing that morning.
Selected heat maps from three different visit to Sinharaja (two in December 2020 and the final trip in March 2021)
Snapshots from the March 2021 visit to Sinharaja. From Left: Rashmi, Martin, Chandralatha, Nirosha, Lenny & Ian at the forest lodge. Martin on his verandah. Lenny, Ratnasiri and Rashmi at his new cottage.
SELECTED REFERENCES
Ashton, P.M.S and S. Gamage, I. A. U. N. Gunatilleke and C. V. S. Gunatilleke. “Restoration of a Sri Lankan Rainforest: Using Caribbean Pine Pinus caribaea as a Nurse for Establishing Late-Successional Tree Species.” Journal of Applied Ecology. 1997, 34 . Web via JSTOR.
De Silva, Anslem. Amphibians of Sri Lanka: A Photographic Guide to Common Frogs, Toad Caecilians. Published by author, 2009. Print.
De Silva, Anslem and Kanishka Ukuwela. A Naturalist’s Guide to the Reptiles of Sri Lanka. Colombo: Vijitha Yapa Publishing, 2017. Print.
DeZoysa, Neela and Rhyana Raheem. Sinharaja: A Rainforest in Sri Lanka. Colombo: March for Conservation, 1990. Print.
Gunatilleke, C.V.S, et al. Ecology of Sinharaja Rain Forest and the Forest Dynamics Plot in Sri Lanka’s Natural World Heritage Site. Colombo: WHT Publications, 2004. Print.
Harrison, John. A Field Guide to the Birds of Sri Lanka. UK: Oxford University Press, 1999. Print.
Kotagama, Sarath W and Eben Goodale. “The composition and spatial organization of mixed-species flocks in a Sri Lankan rainforest.” Forktail. 2004. Print & Web.
Liyanage, L. P. K. et al. “Assessment of Tourist and Community Perception with Regard to Tourism Sustainability Indicators: A Case Study of Sinharaja World Heritage Rainforest, Sri Lanka.” World Academy of Science, Engineering and Technology International Journal of Social and Business Sciences. Vol 12 No. 7. 2018. Web.
Lockwood, Ian. “Into the Wet: Field Notes From Sri Lanka’s Wet Zone.” Sanctuary Asia. August/September 2007. 3-11. Print. PDF.
Lockwood, Ian. “Montane Biodiversity in the Land of Serendipity.” Sanctuary Asia. July 2010. Print.
Lockwood, Ian. “Preliminary Analysis of Land Cover in the Sinharaja Adiviya using Planet Dove Imagery.” Ian Lockwood Blog. September 2019. Web.
Singhalage Darshani, Nadeera Weerasinghe and Gehan de Silva Wijeratne. A Naturalist’s Guide to the Flowers of Sri Lanka. Colombo: Vijitha Yapa Publications, 2018. Print.
Sri Lanka Survey Department. Sheets 80_x & 81_x (1:10,000) 2nd Edition. Colombo: 2017. Maps & Spatial Data.
Warakagoda, Deepal et. al. Birds of Sri Lanka (Helm Field Guides). London: Helms Guides, 2012. Print.
Wikramanayake, Eric. “Sri Lankan Moist Forests Ecoregion: An Imperiled Island Rainforest.” The Encyclopedia of Conservation. 2020. Web.
Wijeyeratne, Gehan de Silva. Sri Lankan Wildlife (Bradt Guides). Bucks, England: Bradt Travel Ltd. 2007. Print.
Vigallon, S. The Sinharaja Guidebook for Eco-Tourists. Colombo: Stamford Lake Publications, 2007. Print.
Thattekad Winter 2019 Visit
A kaleidoscope of Thattekad’s birds from the December trip. Clockwise from upper left: Gray Jungle Fowl (Gallus sonneratii), Sri Lanka Frogmouth (Batrachostomus moniliger), Fairy Bluebird (Irena puella), Greater Racket-Tailed Drongo (Dicrurus paradiseus), White Bellied Blue Flycatcher (female) Flycatcher (Cyronis pallipes), Mottled Wood Owl (Strix ocellata), Slaty-legged Crake (Rallina eurizonoides), Streak-throated Woodpecker (Picus xanthopygaeus), birding group in action, Forest Eagle-owl (Bubo nipalensis), Flame-throated Bulbul (Pycnonotus gularis), Indian Pitta (Pitta brachyura), Orange-headed Thrush (Geokichla citrina), Jerdon’s Nightjar (Caprimulgus atripennis), Malabar Trogon (Harpactes fasciatus).
A highlight of the winter holidays was spending time in Thattekad with Lenny looking for and photographing the key endemic bird species of the Western Ghats/Sri Lanka biodiversity hotspot. My time staying with KV Eldhose at Thattekad last June (as documented in an earlier post) was quiet but rewarding. The December visit was during peak season and Eldhose’s place was full up and rocking. Our four days and three nights were a fast-paced series of birding encounters with many highlights that have taken me months (and an unplanned curfew/lock down thanks to COVID-19) to process and appreciate. Unlike my normally solitary bird forays, the December outings in Thattekad were accomplished as part of a group(s). Lenny and I were there with guided teams of photographers from Pune and Chennai and then independent birders from the US and UK. As usual, either Eldhose or his trusty lieutenants Adjomon and Vimal accompanied the groups out.
In mid-December Lenny and I took a scenic drive from Kodai down to Bodi, over the Ghats and through the Cardamom Hills to reach Thattekad (about six hours of driving). We had an auspicious start when our arrival coincided with the pursuit of one of the most difficult birds to see in the Western Ghats/Sri Lanka biodiversity hotspot. A pair of Sri Lanka Bay Owls (Phodilus assimilis) was roosting in the primary forest and we were invited to take a peak. After a short 20 minute drive up the road Vimal guided us into a thick tangle of canes, dense shrubbery and towering rainforest trees. My 600 mm lens was still cold from having been up in Kodai and it fogged up when I took it out of the pelican case. It took nearly an hour to acclimatize so the shots of the Bay owl were taken with the 200-500 mm lens that Lenny used on the trip (we had taken it out to photograph Euphorbia trees for Bruce Dejong on the Bodi ghat).
SrI Lanka or Ceylon Bay Owls (Phodilus assimilis) at Thattekad primary forest. Guiding courtesy of KV Eldhose & Vimal Niravathu.
Thattekad primary forest area in winter light.
All of Eldhose’s cottages were full and we stayed in the main house. He was busy running his operation with key support provided by his wife Amy and daughter Ashy. The groups from Chennai and Pune were friendly and during the brief moments where we weren’t out finding birds we shared stories and images. The Chennai group was composed of middle aged and older men from the Photographic Society of Madras and was led by Saravanan Janakarajan. We spent time with them in the hides, in the primary forest and in the evening looking for owls. Lenny and I also got to know Jim and Maggie, a friendly couple from Seattle.
A SUPERB DAILY ROUTINE
Our pattern was to visit a hide visit close to Eldhose’s home at first light. That offered a chance to photograph the reclusive Slaty-breasted Rail (Gallirallus striatus) and then the more reliable starlings, trees pies, woodpeckers and drongos. The hide is close to the house and cottages but it is tiny and we had to take turns. My photographs were taken on the 2nd last morning. Rather than have breakfast at home, all the groups headed out to the primary forest 7:30 and ate breakfast on the way at Kuttampuzha. A simple road side café overlooking a tributary of the Periyar river offered classic Kerala breakfast fare (appam, puttu, paratha, beef curry, chickpeas etc.)
The primary forest, where most of the key birding is accomplished, is actually not a large forest area like Parambikulam, Periyar or Vazhachal. It isn’t even technically part of the Salim Ali Sanctuary, the protected area that Thattekad is associated with. But there is enough habitat diversity and remnant lowlands tropical rainforest to offer opportunities to see all sorts of key Western Ghats birds. It’s not the sort of place that you can wander around on your own and we were accompanied by Adjomon and Vimal. They had their hands full and it would have been better to be in a smaller group but we did fine. The habitat is ideal for Malabar Trogons (Harpactes fasciatus), which I never tire of photographing. They are shy but will sit still in a shaded area if you are fortunate. We saw Sri Lankan Frogmouths (Batrachostomus moniliger) on three different occasions and the guides have several spots that they check reliably.
Our birding mornings typically stretched on to about 1:00-2:00 PM and then we headed back to Eldhose’s to eat, rest briefly and get ready for the afternoon programs. There was a rotation of hides to visit and the groups took turns visiting them. Just behind his newly constructed rooms, a rare Slaty-legged Crake (Rallina eurizonoides) appeared like clockwork every afternoon at the edge of the wetland to look for mealworms. The other two hides are the “Treepie” and “Flycatcher hides.” Both of these are located on privately owned land that adjoins forest patches. They offer unparalleled opportunities to see and photograph key species up close and personal. White-bellied Treepie (Dendrocitta leucogastra), Chestnut-tailed Starling (Sturnia malabarica), Red Spurfowl (Galloperdix spadicea) and Fairy Bluebird (Irena puella) were my personal favorites at the Treepie hide. Lenny and I spent a wonderful afternoon-almost three hours- at the Flycatcher hide with Jim and Maggie. The diversity of flycatchers and other birds was truly dazzling and it was difficult to keep track of the different species as they came in for an afternoon bath and feed. The key flycatchers included the Blue-throated flycatcher (Cyornis rubeculoides), White-bellied Blue Flycatcher (Cyronis pallipes), Rusty-tailed Flycatcher (Muscicapa ruficauda) and Indian paradise flycatcher (Terpsiphone paradisi). We were also treated to exquisite views of an Indian Pitta (Pitta brachyura), Orange-headed Thrush (Geokichla citrina) and Malabar Whistling-thrush (Myophonus horsfieldii).
Evenings at Eldhose’s always started with an effort to see the Mottled Wood Owl (Strix ocellata) at twilight. This experience had been a highlight of the June trip and sure enough an individual of this rare endemic species came back this time. All of us photographers, armed with tripods and lenses (see images), were lined up and seated for the show. We had one excellent sighting and then two nights where it decided not to visit. Before dinner we had the opportunity to go out looking for rare night birds in the nearby secondary forest. Here the rarities included the Great Eared-nightjar (Lyncornis macrotis) and Forest Eagle-owl (Bubo nipalensis). The nightjar sat in the same place very evening while the Forest Eagle-owl was shy and hard to see. I did manage a blurry image on the 2nd evening.
Indian Pitta (Pitta brachyura) bear Thattekad. Hide courtesy of KV Eldhose.
Hilltop birding inside the primary forest. The open rock faces provide good views of the canopy. There are remnants of ancient humans living here in disused grinding stones and what might be collapsed dolmans. A family of adivasis was camped at the spot and had permission to collect minor forest products.
On our last morning before Lenny and I returned to Kodai we had a chance to photograph the Grey Jungle Fowl (Gallus sonneratii). This is a bird that I have been listening to for much of my life and I’ve frequently seen it on hikes in the Palani Hills. But the sighting near Eldhose’s gave me a whole new appreciation for its beauty (especially in the male individuals). Soon after we packed up, said goodbye to Eldhose, Amy and Ashy and headed back to Kodai to be there in time for a Christmas in the hills. The sightings of birds and experiences in Thattekad left us with an overwhelming sense of awe and appreciation for the diversity of winged life forms in the southern Western Ghats.
Bird watching and photography gear at KV Eldhose’s on a brief break from the action.
FURTHER READING & REFERENCES
Ali, Salim. Birds of Kerala, 3rd Edition. Kerala Forest & Wildlife Department. Thiruvananthapuram, 1999.Print.
Birding South India. (Eldhose’s website). Web.
Grimmett, Richard Carol Inskipp and Tim Inskipp. Birds of the Indian Subcontinent, Second Edition. London: Helms Field Guide/Oxford University Press, 2011. Print.
Kazmierczak, Krys. and Raj Singh. A Birdwatcher’ Guide to India. Devon, UK: Prion,1998. Print.
Rasmussen, Pamela C. and John Anderson. Birds of South Asia: The Ripley Guide. Volumes 1 &2, Second Edition. Washington DC: Smithsonian, 2012. Print.
Sreenivasan, Ramki. “Thattekad Check List and Trip Report.” Birds of India. ND. Web.
Sri Lanka Mountain Traverse (Part I)
A collage of diversity: highlights from 10 days of traversing Sri Lanka’s mountain zones.
Sri Lanka’s modest island boundaries hosts a rich assemblage of habitats with unique life forms that contribute to its status as one of 36 global biodiversity hotspots (together with the Western Ghats of India). Several of these places-namely Sinharaja rainforest and the Central Highlands -are also recognized by UNESCO as World Heritage Sites. In mid-June this year my son Lenny and I took an unforgettable ten day south-north traverse through the three most important mountain ranges of Sri Lanka looking to explore themes of endemism.
The Rakwana Hills (including Sinharaja), Central Highlands and Knuckles range share certain geographic and vegetation patterns and yet have distinct species with very restricted distributions. They are all in the “wet zone” receiving between 2,500-6,000 mm of rain (see SL Biodiversity Clearing House Mechanism) . In May this year I read a new article by Sri Lankan amphibian guru Madhava Meegaskumbura and colleagues entitled “Diversification of shrub frogs (Rhacophoridae, Pseudophilautus) in Sri Lanka – Timing and geographic context” (see Molecular Phylogenetics and Evolution and the summary by Dilrukshi Handunnetti in Mongabay). The authors highlight the genus Pseudophilautus in the three ranges and their connections to shrub frogs in the Western Ghats. They delve deep into the species at a molecular level that is beyond most of us but I was fascinated by the role of mountain geography in the species’ distribution. This got me thinking about doing a single traverse through the same ranges at the onset of the South West Monsoon.
About the same time, Lenny was formulating an approach to his IB MYP5 personal project. This culminating exercise challenges students to pick their own project, make a product or produce an outcome and then reflect deeply on the process. He had been fascinated by our (thus far, futile) search for the rare point endemic marbled streamlined frog (Nannophrys marmorata) in the Knuckles range. With a little encouragement from his parents, Lenny decided to explore broad themes of endemism in Sri Lanka using the medium of photography.
Primary ridge forest in Western Sinharaja. These relatively inaccessible areas were never logged during the mechanized logging period (1960s-mid 1970s). The prominent tree species is Shorea trapezifolia from the Dipterocarpaceae family.
Sinharaja West
We started our 10 day traverse, driving southwards from Colombo on the expressway in the middle of heavy monsoon showers. Our first three days and two nights were spent in the western side of Sinharaja, staying with the incomparable Martin Wijeysinghe at his Jungle Lodge. There were showers on all days but this was low season and there were few tourists (and no migrant birds). The road that had been re-paved from the Kudawa ticket office up to the entrance to the core zone entrance was nearly complete and opened for the first time. The impact of this controversial project appeared less harmful than had been projected by concerned citizens and journalists (See the Daily Mirror on 12 February 2019). Pavement stones had been used on the road and a concrete lining put on the storm drain that runs parallel down the road. There were some trees that had been felled and large patches of Strobilanthes and other shrubs cleared. But these should recover within a season or two. If there is one lesson from Sinharaja’s conservation story in the last 40 years it is that the rainforest system is resilient and is able to recover from human disturbance remarkably well. That doesn’t suggest that we should be complacent about conservation and restoration efforts but we do need to give the system a chance to rebound.
Lenny, Amy and I had visited Martin’s for two nights in February along with our friend Mangala Karaunaratne and his two kids. That trip had been rewarding with good sighting of the Golden Civet Cat (Paradoxurus zeylonensis), Blue Magpies (Urocissa ornata), Hump Nosed Lizard (Lyriocephalus scutatus) and several other species. A few of the images are included here, as they paved the way for a deeper exploration of the area.
The extremely rare Golden Palm Civet Cat (Paradoxurus zeylonensis) at Martin’s lodge. This individual made regular night visits for several months but has stopped coming (as of June 2019). (photo taken in January 2019)
Our highlights with endemics in the western part of Sinharaja in June mainly involved birds. We did look for frogs around Martin’s but were not that successful in this early stage of our mountain traverse. During our three days we had rewarding encounters with a Green Billed Coucal (Centropus chlororhynchos), a pair of Sri Lanka Frogmouths (Batrachostomus moniliger), Blue Magpies (Urocissa ornata) and a Green Pit Viper (Trimeresurus trigonocephalus). Thilak, the very talented independent guide, helped us locate a solitary Chestnut Backed Owlet (Glaucidium castanotum). We did encounter a mixed feeding flock during our first walk to the research station. It included some of the usual endemics but we didn’t have a good opportunity to photograph them. A visitor from Singapore staying at Martin’s was very lucky and saw both the Serendib Scops Owl (Otus thilohoffmanni) and the extremely rare Sri Lanka Bay Owl (Phodilus assimilis) in the same area while we were there.
A male Malabar trogon (Harpactes fasciatus) that was part of a mixed species feeding flock near the Sinharaja research station. Regular readers may recognize that this species is one of my favorite species to encounter and photograph. Previous posts from Silent Valley and the Palani Hills have feature Malabar Trogons and a future post from Thattekad (Kerala)will highlight another exquisite individual.
Sri Lanka Green Pit Viper (Trimeresurus trigonocephalus) near the upper Core Zone entrance on Sinharaja’s west side.
Sri Lanka Blue Magpie (Urocissa ornata) visiting Martin’s lodge, in search of months and insects around tea time before breakfast.
Sri Lanka Keelback (Xenochrophis asperrmus) at the ticket gate of the Kudawa entrance to Sinharaja.
The endemic and diminutive Chesnut Backed Owlet (Glaucidium castanotum) was one that took special help to find. Lenny and I were assisted by Thilak, the independent guide, in our search for owls and he found this individual outside of the park boundaries. Just was we were setting up and getting shots with a 200-500 the skies opened up and we were forced to leave before we wanted to. The light was so low and the bird was at least 20 meters away and I was forced to use a strobe.
(to be continued in Part II/IV)
REFERENCES (for all four parts)
Amphibian Survival Alliance. Web.
De Silva, Anslem. Amphibians of Sri Lanka: A Photographic Guide to Common Frogs, Toad Caecilians. Published by author, 2009. Print.
De Silva, Anslem and Kanishka Ukuwela. A Naturalist’s Guide to the Reptiles of Sri Lanka. Colombo: Vijitha Yapa Publishing, 2017. Print.
Gunatilleke, C.V.S. A Nature Guide to the World’s End Trail, Horton Plains. Colombo: Department of Wildlife Conservation, 2007. Print.
Gunatilleke, I.A.U.N, and C.V.S. Gunatilleke and M.A.A. Dilhan. “Plant Biogeography and Conservation of the South Western Hill Forests of Sri Lanka.” The Raffles Bulletin of Zoology, 2005. No. 12 9-22. Web.
Handunnetti, Dilrukshi. “How India’s shrub frogs crossed a bridge to Sri Lanka – and changed forever.” Mongabay. 1 May 2019. Web.
Kotagama, Sarath and Gamini Ratnavira. An Illustrated Guide to the Birds of Sri Lanka. Colombo: FOGSL, 2010. Print.
Meegaskumbura, Madhava et al. “Conservation and biogeography of threatened Amphibians of Eastern Sinharaja.” Froglog. Issue 100. January 2012. Web.
Meegaskumbura, Madhava et al. “Diversification of shrub frogs (Rhacophoridae, Pseudophilautus) in Sri Lanka-Timing and geographic context.” Molecular Phylogenetics and Evolution. 2019. Web.
Pethiyagoda, Rohan. Horton Plains: Sri Lanka’s Cloud Forest National Park. Colombo: WHT, 2013. Print.
Protected Planet. Sri Lanka PA Boundaries. August 2019.
Senevirathna, Ishanda. The Peeping Frogs of Nuwara Eliya. Colombo: Jetwings, 2018. Print.
Somaweera, Ruchira and Nilusha Somaweera. Lizards of Sri Lanka. A Colour Guide with Field Keys. Frankfurt: Edition Chimaira, 2009. Print.
MAP OF THE JOURNEY
Sinharaja 2017 & 18 Geography IA Field Studies
Sinharaja’s rainforest canopy under the Milky Way- an unusual sight given that high humidity often prevents clear view of the heavens. (May 2017).
Two successful OSC Geography field studies have come and gone in the last 15 months. Both learning experiences gave an opportunity for small groups of motivated DP1 students to investigate an individual research question in a rural Sri Lankan landscape. Sinharaja rainforest, a UNESCO-designated World Heritage site, is located the south-western “wet zone” of the country and is well known for its rich biodiversity. OSC classes have been conducting field work in Sinharaja since 2005. The location offers ideal conditions for student learning, inquiry and field work on socio-economic, tourist and land-use themes. Many years ago, we used to do more ecology/ecosystems studies but the changes in the DP Geography syllabus has influenced how students craft their research questions around human aspects of the landscape. On both trips we were privileged to stay at Martin’s Wijeysinghe’s Forest Lodge; it continues to offer an ideal base for student field work, with access to the protected area, a range of habitats and home gardens.
The Sinharaja canopy from Moulawella showing the extensive rainforest over the core part of the World Heritage Site. (May 2017)
May 2017 Experience
The Class of 2018 geography class included eight enthusiastic students representing a diverse range of countries (eight different nationalities, with half the class being dual nationals). They embraced the learning opportunities, didn’t complain about the leeches (it was relatively dry this year) and seemed to thoroughly enjoy the Sri Lankan cuisine cooked up by Martin’s daughter. In 2017 Kamila Sahideen provided support in the interviews and was once active with finding frogs and other forest creatures. We were also happy to have Salman Siddiqui (Malaika and Maha’s father) along for one night. With his role as the head of IWMI’s GIS unit, I appreciated having Salman’s insights on how we might better use GIS/RS & drones to emphasize spatial dimensions of our data collection.
May 2018 Experience
The Class of 2019 geography class was slightly smaller but no less enthusiastic. There were six students and we were supported by Sandali Handagama, OSC’s multi-talented math teacher (and a former student of OSC). We hired four Sinharaja guides each day and they were essential in translating the surveys and helping the students to better understand the area. We have now developed a strong relationships and they have played a key role in the success of OSC’s field work in Sinharaja. Most of the surveys were gathered on foot but at times we hired local jeeps to take us further away from the ticket office at Kudawa.
Each of the students explored an individual geographic research question but pooled all of their sub-questions into a single survey that all could run. The actual survey of 45-50 questions could take up to 20-30 minutes with introductions and a look around home garden properties. The respondents were gracious with their time and several OSC teams were invited to have tea. With several different teams going in different directions we collected 72 different interviews in 2017 and 42 in 2018. We collected responses using Survey 123 a GIS-enabled data gathering app that all the students could run off their phones (we also recorded every response on paper). This allows students to map their results and do basic spatial analysis on the findings using ArcGIS, the GIS software package that they learn to operate in my class.
The elusive and rarely seen Golden Civet Cat (Paradoxurus zeylonensis) making a short visit to Martin’s Lodge during the course of our final meal of idiyappam (string hoppers) and kiri hodi (potato curry).Food was dropped in a slightly messy panic in order to trigger the camera and flashes during its brief time with us.
Sri Lanka frogmouth (Batrachostomus moniliger) female on left and male on the right in a patch of tree ferns. These pictures are only possible-like almost any frogmouth image-with the sharp eyes of a guide! I was assisted by Thandula, Ratnasiri and several others. Students got impressive pictures with their phones. (May 2018).
In addition to conducting the surveys, students got a flavor of being ecotourists in a tropical forest. They walked the different forest trails, encountered mixed species feeding flocks, appreciated small rainforest creatures and soaked their feet in jungle streams. Looking for frogs, insects and snakes at night is always a special treat. On the 2017 trip the class had me wake them up in the middle of the night to take in the majesty of the Milky Way in unusually clear, moisture-free skies. A highlight of the 2018 trip was having an encounter with a rare Golden Civet Cat (Paradoxurus zeylonensis) while eating dinner at Martin’s. The shy nocturnal mammal graced us for a few brief minutes and fed on bananas put out by our hosts. We completed our Sinharaja visits with a hike up to Moulawella peak to take in the full extent of the Sinharaja rainforest landscape. The views in 2017 were especially clear but 2018 also offered the team a chance to take in this remarkable rainforest and home garden landscape.
Class of 2019 DP Geography Class and several of the Sinharaja guides (May 2018).
The Class of 2018 DP Geography Class with Martin at his Forest Lodge. Back Row: Easmond, Thiany, Aanaath, Zoe, Adrian & Ian. Bottom Row: Malaika, Salman S, Martin, Kamila, Fatma & Yuki. (May 2017)
The Class of 2019 DP Geography Class with Martin at his Forest Lodge. Back Row: Joran, Dominic, Devin, Lukas, Martin’s grandson and granddaughter. Middle Row: Sandali, Martin, his wife and daughter. Bottom Row: Sarah, Maha and Ian (May 2018)
Past Blog Posts on Sinharaja
SELECTED REFERENCES
Abeywickrama. Asanga, Sinharaja Rainforest Sri Lanka. Web. 2009.
DeZoysa, Neela and Rhyana Raheem. Sinharaja: A Rainforest in Sri Lanka. Colombo: March for Conservation, 1990. Print.
Gunatilleke, C.V.S, et al. Ecology of Sinharaja Rain Forest and the Forest Dynamics Plot in Sri Lanka’s Natural World Heritage Site.Colombo: WHT Publications, 2004. Print.
Harrison, John. A Field Guide to the Birds of Sri Lanka. UK: Oxford University Press, 1999. Print.
Kotagama, Sarath W and Eben Goodale. “The composition and spatial organization of mixed-species flocks in a Sri Lankan rainforest.” Forktail. 2004. Print.
Lockwood, Ian. “Into the Wet: Field Notes From Sri Lanka’s Wet Zone.” Sanctuary Asia. August/September 2007. 3-11. Print. PDF.
Lockwood, Ian. “Montane Biodiversity in the Land of Serendipity.” Sanctuary Asia. July 2010. Print.
Sri Lanka Survey Department. Sheets 80_x & 81_x (1:10,000). Colombo: 2015. Maps & Spatial Data.
Warakagoda. Deepal et. al. Birds of Sri Lanka (Helm Field Guides). London: Helms Guides, 2012. Print.
Wijeyeratne, Gehan de Silva. Sri Lankan Wildlife (Bradt Guides). Bucks, England: Bradt Travel Ltd. 2007. Print.
Vigallon, S. The Sinharaja Guidebook for Eco-Tourists. Colombo: Stamford Lake Publications, 2007. Print.
A Week Without Walls in Sinharaja
Sinharaja morning walk…looking for bird flocks on the way to the Gallenyaya caves.
At the end of January I spent five superb days exploring different aspects of Sinharaja’s ecology, geography and human impact with sixteen Grade 10 & 11 students. Our trip was part of a larger secondary school learning exploration of Sri Lanka. The focus is on experiential education, service and addressing curricular goals outside of the traditional classroom. For the older students the trips are focused through the learning outcomes of the Creativity Action & Service (CAS) program.
Our group started in the west with two nights at Martin’s Lodge near the Kudawa entrance. This, of course, is where the vast majority of visitors to Sinharaja go. Martin’s offers a very genuine, albeit basic, kind of ecotourism opportunity: Martin and his family are from the area, the lodge is powered by a home-made mini-hydro unit, you eat locally produced Sri Lankan food, drink clean stream water, take showers in solar heated water and enjoy many of Sinharaja’s avian highlights sipping tea on the verandah. There are few temptations to distract you, though cell phone connectivity is starting to creep in. This proved to be a bit of a distraction to several members of our party who had a challenging time being offline and away from other modern trappings.
On Wednesday we took the long and very windy road north and east of the boundary via Rakwana, Suriyakanda and Deniyaya to the incomparable Rainforest Ecolodge. During the course of the five days looked for birds, handled snakes, trekked into the deep forest to explore caves, climbed peaks, swam in cold mountain streams and tried to sit in silence in the star-lit forest (not very successful with all the giggles and leech-inspired screams). I gave several photography mini-workshops and had lots to share about he ecology, but a bad cold had robbed me of my voice. Pradeep, our other male chaperone helped me out while I rolled my eyes and tried to use sign language. Time was set aside each day all of us to reflect using journals and guiding questions. Overall the students were great and put up with the activities, conditions, numerous stops and long road trips. Their efforts to organize a clothes drive and health camp with Indrika Senaratne at the Ecolodge tea worker’s camps worked out exceedingly well and surpassed our expectations.
Meanwhile the rest of OSC’s secondary school was out and about in the different corners of Sri Lanka. This year the WWW program that I coordinate had trips in Jaffna, Anuradhapura, Arugam Bay, Bandarawella, Kitulgala, Hikkaduwa, and Galle. There were major changes this year in that the older students got to choose and then participate in the planning of their trips- modeled on the MUWCI Project Weeks that Raina and I were involved with a decade ago. This coming week we are having a WWW exhibition to share all the learning with our school community.
Forest Department map of Sinharaja from a signboard at the Kudawa entrance.
OSC 2013 WWW Sinharaja group at Martin’s about to hit the forest in new leech socks.
Primary forest stream at sunrise, Sinharaja
More biodiversity that we witnessed in Sinharaja (clockwise from upper left): Pied Parasol (Neurothemis tullia), Impatiens sp. , Sinharaja Bent Toe Gecko (Cyrodactylus subsolanus) and the Sri Lanka pitcher plant (Nepenthes distillatoria).
Medical camp run by Dr. Indrika Senaratne and our OSC students at the Rainforest Ecolodge village for tea workers.
Rainforest Ecolodge: Night and Day.
View north and east from the Rainforest Ecolodge. The high ridge (@1,300 m) has notable peaks on it with Suriyakanada’s towers being at the far right. Morningside is a short distance away over the forested foreground. Click on image to enlarge.
More biodiversity (clockwise from top): Kendrikcia walkeri, ferns on the Sinhagla trail and a female Sri Lanka frogmouth (Batrachostomus moniliger)
Chandra, the only female nature guide working at Sinharaja, at the Gallenyaya cave on Sinhagala trail. She has been working with OSC students groups for the last seven years.
Sub-montane rainforest canopy from the Rainforest Ecolodge.
Leaving the forest on a beautiful morning with creation light.
Sinharaja West, Sinharaja East (Part I)
Variations on the Sinharaja rainforest canopy highlighting undisturbed primary forest on the ridge with secondary growth on the lower slopes (evidenced by Calamus sp. etc.). The images were taken on a Nikon digital SLR, processed on Adobe Photoshop CS5 and then manipulated with Nik software’s ColorEfex 4 plugin.
Sinharaja, the resplendent tropical lowland rainforest in south-western Sri Lanka, is a remarkable protected area, UNESCO world heritage site and living laboratory. For the last seven years it has provided an important field study site for my Geography and Environmental Systems classes at the Overseas School of Colombo. It is a large protected area (11,187 ha) and in all my years in Sri Lanka I have focused on visits to the biodiversity-rich western corner. In the last 10 days I have had the privilege of visiting both western and higher eastern portions (the next post will highlight the visits to the less-visited, higher altitude eastern areas of Sinharaja).
In early May OSC’s grade 11 IBDP Geography students had four days of rich and productive fieldwork in Sinharaja’s western (Kudawa) corner. As on past trips, the focus of the trip was for the students to collect field data for their internal assessment that accounts for 20-25% of their final grade. In years past we focused on the ecosystems angle of the tropical rainforest but with the revisions in the syllabus we are now looking at tourism as a development strategy, the theme of “biodiversity and change” and issues surrounding home garden agriculture. Land use patterns and spatial analysis are important aspects for all groups and thanks to Survey Department data from 2005 we are able to map and make attempts to verify the accuracy of this data using our ArcGIS software.
This year we utilized the new southern expressway and were up at our host Martin’s Jungle Lodge by noon. His lodge has ideal conditions for a forest experience sitting on the boundary between the buffer and core zone of the protected area. There is excellent secondary forest that attracts most of the endemic birds and a clear stream for guests to cool off in the afternoon. Electricity is generated by a small micro-turbine and there is limited cell phone coverage (thankfully). Weather conditions were dry, a surprise after the deluge that Colombo had experienced on April 30th.
Collage showing three significant habitats that were used as study sites for students. The first is a canopy view over primary forest taken on Moulawella Peak in the core zone of Sinharaja, the second shows secondary forest mixed with a non-native pine plantation in the buffer zone. Finally the last images shows tea estates sandwiched between the small settlement of Kuduwa and the park boundary.
Thirteen students of varying nationalities (Sri Lanka, India, Finland, Canada, Switzerland, USA etc.) joined the trip. I was supported by Eileen Niedermann, our secondary school principal and Haris Dharmasiri, OSC’s resourceful lead science technician. Lilani Ranasigha traded places with Eileen half way through the trip. After getting settled in we started the experience with a walk and introductory lecture to the Sinharaja core area. In years past we’ve been fortunate to have Professor Sarath Kotagama to give us the context for Sinharaja’s protection and what kind of significant threat the systematic logging posed in the 1970s. That afternoon we traversed the well-worn tourist paths though secondary, primary and ridge forests as we moved towards the research station. This is a major focal point (and former logging camp/maintenance depot) for all visitors to this side of Sinharaja and we use it as a base for studies in primary and secondary forests. The Blue Magpies (Urocissa ornata) did not disappoint and swooped down to give us an intimate encounter. The students were still consumed with removing leaches, something that would soon become an insignificant inconvenience.
Over the next two days students broke into small groups to gather field data on their individual questions. We had a group looking at plant species in different habitats, another studying soil in forest and human-impacted landscapes, a group of three studying water quality in forest streams and home garden water bodies, a group looking at tourist numbers and the idea of ecotourism and finally a group conducting an energy audit and survey of homes in the buffer zone of Sinharaja. Needless to say we chaperones could not monitor all of these simultaneously and the trip is designed for students to conduct a fair amount of independent data collection. During the course of the trip we had a chance to accompany each group, provide feedback and observe their methodology.
OSC students collecting different types of data in Sinharaja for their Geography IAs. At the top students (Uvin, Brooke, Rachel & Alisha) conducting an interview with a resident about the impact of ecotourism on livelihoods. Sarah, Janik and Nadeera testing stream water samples at Martin’s Lodge. Vera and Alisha aided by Ratna identifying key plant species along a 15 meter transect in secondary forest. Lastly, Uvin using a 10 m2 quadrat to look at invasive plants in a home garden plot about to be planted with tea.
Sinharaja rainforest canopy panorama highlighting undisturbed primary forest on the ridge with secondary growth on the lower slopes. Moulawella is the center peak in the background.
Tropical Rainforest, near the Sinharaja Research Center
Ongoing experiments with spatial data from the Sinharaja area using Arcmap. We have fairly good data from the Survey Department and other sources and are now looking to effectively use it to give a spatial perspective to individual studies. Close inspection reveals issues with correctly georeferencing some of the data at a large scale.
Sinharaja has hosted several landmark ecological studies including the two decade long forest dynamics study of a 25 hectare plot by the Smithsonian Tropical Research Institute and Peradeniya University and several other notable educational institutions. A classic study on the composition and spatial organization of mixed species flocks by Sarath Kotagama and Eben Goodale from 2004 serves as a model study and journal article for OSC students. Compared to these landmark studies our fleeting encounter yields limited data. The data that we gather on the trip is useful for the students’ work but at this point is not contributing to any long term monitoring of the area. What we are doing is getting a better sense of land use and home garden that should serve as an important evidence of patterns at this point in time.
An intriguing development in the western corner of Sinharaja is how it is being used as a location to host “reconciliation workshops” for students from all over the country. The basic idea is to bring teenage students from government schools in the conflict affected areas in the north and east of the country and foster an appreciation of nature to help provide a more lasting peace. “Reconciliation through the Power of Nature” is facilitated by the tireless work and enlightened thinking of Professor Kotagama and the Field Ornithology Group of Sri Lanka (FOGSL) with support provided by Dilmah Conservation. Martin hosts these student-teacher groups at his lodge and there are illuminating posters illustrating the goals and outcomes of the three day workshops for Jaffna schools.
Sri Lanka/Ceylon Frogmouth (Batrachostomus moniliger). Adolescent male and adult female.
Birds and the rich diversity of Sri Lankan endemics is what first drew me to Sinharaja in 1999. During a 4 day visit with my cousin Anna we trekked all over the different paths, including Moulawella and Sinhagala, looking for mixed species flocks and using just binoculars and field guides (no cameras!). On this trip to Sinharaja I had less time for birds because of the focus on human impact and land use patterns. However, we did encounter several mixed species flocks and had delightful views of a Red Faced Malkoha (Phaenicophaeus pyrrhocephalus) and Malabar Trogon (Harpactes fasciatus) as well as the other flock members. A highlight for me was getting to observe and photograph a pair of Sri Lanka Frogmouths (Batrachostomus moniliger) on the return from our hike to Moulawella. They were located by our energetic and informed guides Dinushka, Shanta and Ratna in a thicket of tree ferns. All the students got to see the endemic Sri Lanka Green Pit Viper (Trimeresurus trigonocephalus) and a shy Hump Nosed lizard (Lyriocephalus scuatus) up close. We returned to Colombo n May 3rd with plenty of field data and experiences not to be forgotten. I was delighted with the outcomes of the trip and the knowledge that I was turning around with my family to visit the other end of Sinharaja on the next day!
Emblematic species from Sinharaja seen on the trip (clockwise from upper left): Ceylon or SL frogmouth (Batrachostomus moniliger) adolescent male and adult female, Pitcher plant (Nepenthes distillatoria) in a former pinus plantation, SL Green Pit Viper (Trimeresurus trigonocephalus) and the SL Blue Magpie (Urocissa ornata).
Rainforest emergent layer and canopy, looking southwards from Moulawella Peak after a climb up with most of the group on Thursday morning.
Study area map
OSC’s Class of 2013 Geography students at a playful final group picture after four days of productive research and fieldwork. Our host Martin is seated second from the right. Haris Dharmasiri, OSC’s lab technician par-excellence is seated on the far left while Lilani Ranasingha, our energetic female chaperone is seated on the far right.
