Wednesday, June 25, 2014

දිය නයා/දියබරියා[Diya Naya/Diyabariya]/Checkered Keelback (Xenochrophis piscator)

A non-venomous, semi-aquatic snake inhabiting streams, rivers, paddy fields, tanks, marshes etc. from lowlands up to about 1200m elevations in the hills. Mainly a diurnal snake though sometime active even during the night. It feeds mainly on frogs and fish. 

Monday, June 23, 2014

Lucky-nut/Yellow oleander (Cascabela thevetia [Syn: Thevetia peruviana])

An introduced tree cultivated in gardens and roadsides. Flowering throughout the year. Native to Central and South America.

Friday, June 20, 2014

Annotated checklist of Vagrant Old World Warblers (Family: Sylviidae) recorded in Sri Lanka

    Birds that appear outside their normal range are known as vagrants. This post summarizes up to date published sight records of vagrants of the family Sylviidae (Old World Warblers) in Sri Lanka.
   
  Confirmed vagrants


     1) Broad-tailed grassbird (Schoenicola platyurus)
Legge found a single specimen of this bird in British museum which was procured by Hugh Cuming [A well known collector of shells and other natural history specimens] from Ceylon. He doubted it as a straggler in Sri Lanka and gave a most probable place where this bird can be occurred since once he met with a bird with similar disposition, which has never before seen in Ceylon from that place. The place he mentioned is Muthurajawela marsh which he described as “great swamp lying between the Negombo canal and the highroad to that place from Colombo”(Legge V. 1880:694-95). Wait while assuming it as a rare resident species writes: “Messrs. Cave [Walter A. Cave] and Symons [C.S. Symons] believe they once saw two specimens in lantana scrub near the government bunglows in Colombo”(Wait W.E., 1931). Phillips mentioned about two more rather doubtful sight records in 1939. Single bird at Gammaduwa in the East Mathale hills and another two birds on a hillside at WaitalawaNugatenna,( 2500ft), in the Rangala hills to the North of Kandy. Both of above instances birds were observed in tall ‘Mana’ grass.(Phillips W.W.A., 1978:79). Wijesinghe discussed the evidence related to the specimen mentioned by Legge and concluded that there would seems to be little or no ground for including it in the Sri Lankan list (Wijesinghe, D. P., 1983). However base on Phillips sight records (Those were reassured to Wijesinghe by Phillips himself by a letter stating that he is almost certain of identification) and several other circumstantial evidence he discussed in his paper suggested that this species could be an occasional visitor to Sri Lanka (Wijesinghe, D. P., 1983Ranasinghe (Ranasinghe, D. B., 1997) believes it as a probable vagrant to low lands and lower hills.

Unconfirmed vagrants:

Species for which there are only one or two sight records exist categorized here as unconfirmed vagrants. Problematic records without sufficient details are also included.


     2) Pale-footed bush-warbler ( Cettia pallidipes )
Single sight record at Kandy in March 1993 by A.J. Vincent is the only record (Kotagama S. & Ratnavira G., 2010:287)

     3) Lanceolated Warbler (Locustella lanceolata)
A sight record by Deepal Warakagoda of a single bird at Bellanwila-Attidiya marsh in 12th October 1991 is the only record of the occurrence of Lanceolated Warbler in Sri Lanka (Warakagoda, D., 1992). It remained there till the end of April/early May of 1992 (Hoffmann, T. W., 1993)

     4) Dusky Warbler (Phylloscopus fuscatus)
Deepal warakagoda, U.Sirivardena and Kithsiri Gunewardena recorded it first time in Sri Lanka in March 1999 near Pugoda (Warakagoda, D., 2000). Second sight record is also by Deepal Warakagoda in January 2000 at Bellanwila-Attidiya marsh (Senanayake, N., 2001).


5) Western Crowned Warbler (Phylloscopus typicalis)
First time recorded by Deepal Warakagoda and Paul Holt on February 2010 at Sigiriya (Warakagoda D. & Sirivardana U., 2011)

      6) Green-crowned Warbler [Golden-spectacled Warbler] (Seicercus burkii)
Sight record from Sigiriya in March 1993 by A.J. Vincent is the only record of occurrence of Green-crowned Warbler in Sri Lanka (Kotagama S. & Ratnavira G. 2010: 291)

     7) Grasshopper Warbler [Common Grasshopper Warbler] (Locustella naevia)
First sight record of Grasshopper warbler in Sri Lanka is from the Bellawila-Attidiya marsh in 4th December 1993 by Jagath Gunawardana (Hoffmann, T. W., 1994).  It was recorded again on 15th Oct 1994 at the same location by Deepal Warakagoda (Hoffmann, T. W., 1995)

     8) Small Whitethroat [Desert Whitethroat] (Sylvia  minula)
Probable sight of the Desert lesser Whitethroat (Sylvia curruca minula) in the year 1996 is noted in the reviews of Ceylon bird club notes for 1996 (Hoffmann, T. W., 1997).  It was reported from Embilikala in November 1996 by Deepal Warakagoda (Kaluthota C.D. & Kotagama S.W. 2009 Quoting Warakagoda D., 2000a)

References:
Hoffmann, T. W., 1997. Ceylon Bird Club Notes 1996. Loris, 21(3), 112-113.
Hoffmann, T. W., 1995. Ceylon Bird Club Notes 1994. Loris, 20(5), 226-227.
Hoffmann, T. W., 1994. Ceylon Bird Club Notes, 1993. Loris, 20(3), 107-109.
Hoffmann, T. W., 1993. Notes from the Ceylon Bird Club, 1992. Loris, 20(1), 12-14.
Kaluthota C.D. & Kotagama S.W. 2009. Revised Avifaunal List of Sri Lanka, Occasional Paper No.02, October 2009, Field Ornithology Group of Sri Lanka (Downloaded from http://www.fogsl.net/Prod/wp-content/uploads/2009/11/Checklist-ver-7.pdf)
Kotagama, S., Ratnavira, G. 2010. An illustrated Guide to the Birds of Sri Lanka. Field Ornithology Group of Sri Lanka, Colombo.
Legge V., 1880. A History of the birds of Ceylon  1983 second edition.
Phillips W.W.A., 1978. Annotated checklist of the Birds of Ceylon (Sri Lanka) 1978 revised edition.
Ranasinghe, D. B., 1997. Gaps on Field data for Sri Lankan Birds. Loris, 21(4), 170-172.
Senanayake, N.. 2001. Report from the Ceylon Bird Club for 2000. Loris, 22(5), 43-44
Wait W.E., 1931. Manual of the Birds of Ceylon. 2nd edition. Colombo Museum.
Warakagoda D., 2000. Report from the Ceylon Bird Club for 1999. Loris, 22(4), 23-25.
Warakagoda D., 2000a First record of Desert Whitethroat Sylvia (curruca) minula in Sri Lanka, CBCN Aug:134-137
Warakagoda, D., 1992. The Lanceolated Warbler (Locustella lanceolata): A new Species for Sri Lanka With two other rare warblers. Loris, 19(5), 166-168.
Warakagoda D. & Sirivardana U., 2011. Report from the Ceylon Bird Club for 2008-2011, Loris 26 (1&2)
Wijesinghe, D. P., 1983. Notes on some Rare Sri Lanka Birds -1. Loris, 16(4), 205-208.

Wednesday, June 18, 2014

පෙනෙල-වැල්[Penela-Wel]/Baloon vine (Cardiospermum halicacabum)

Common climbing herb found in lowland forests and waste lands in both dry and wet zone. Flowers and fruits occurs throughout the year.

Sunday, June 15, 2014

ලේ තිත්තයා/දොල තිත්තයා/වයිරන් තිත්තයා/කොන්ඩයා[/Le Tiththaya/Dhola Tiththaya/Vayiran Tiththaya/Kondaya]Cherry Barb (Puntius titteya)

Cherry barb is an endemic fish inhabiting shaded shallow, slow flowing streams with silt substrate and leaf debris in the wet lowlands from Kelani to Nilwala basins up to about 300m a.s.l.  It is not uncommon but becoming rare in most former habitats due to deforestation, pollution of streams and over fishing to export by the ornamental fish traders. It is an omnivorous fish and feeds on detritus, green algae, diatoms, diptera and animal matter (Pethiyagoda, R., 1991). Various color forms are reported depending on the locality.

Friday, June 13, 2014

නාවා [Nawa] (Sterculia balanghas)

Small to medium tree occurs in monsoon forests, along roadsides, rocky outcrops etc. from sea level to about 900m elevation. Also cultivated as an ornamental and as a fence tree.

Wednesday, June 11, 2014

Monday, June 9, 2014

මූණ-මල්[muna-mal] (Manilkara kauki [Syn: Mimusops elengi])

A large tree occurs in wet lowland to submontane and montane primary and secondary forests (Introduced ? >>). Often cultivated due to medicinal value of all of its parts. Fruit edible and wood use in constructions. 

Saturday, June 7, 2014

Pointed Lineblue (Ionolyce helicon)

Very rare butterfly found in forests and well wooded areas throughout the island, particularly in the wet zone. It settles on the damp earth. The females are much rarer than males. No records available on its early stages of the life cycle. 

Thursday, June 5, 2014

Vagrant Cuckoos (Family: Cuculidae) recorded in Sri Lanka

Birds that appear outside their normal range are known as vagrants. This post summarizes up to date published sight records of vagrants of the family Cuculidae (Cuckoos) in Sri Lanka.

1) Asian Emerald Cuckoo (Chrysococcyx maculatus)
Peter Brown in his “New Illustration of zoology” figured this cuckoo stating that his specimen of the “spotted curucui” as having been sent from Ceylon by governor Loten (Legge V., 1880: 309 & Phillips, W.W.A., 1948). Legge remarked that “It has not, to the best of my knowledge, since been met with or heard of even in the island”. However type description of the Emerald cuckoo based on above painting (Phillips, W.W.A., 1948). Although several authors on Sri Lankan avifauna mention that Loten’s is the only record of its occurrence in Sri Lanka, Hue Nevill has given a sighting of an adult male near Rane, in the south-east Sri Lanka in 1866 (Wijesinghe, D. P., 1983 & Nevill, H., 1887). There is a recent sight record also of it in Sri Lanka by Upali Ekanayake in 2004, single bird in January and another (Probably the same bird?) in February at Sigiriya (Siriwardana, U., 2005)

     2) Lesser Coucal (Centropus bengalensis)
Occurrence of this Coucal in Sri Lanka is base on a single specimen found by A.L. Butler in a collection of a native dealer, procured in the North Western province in April 1896. Wait doubted Lesser Coucal as a possible rare resident (Wait W.E., 1931:220).  Later on Philips noted a rather doubtful sight record in the jungle near Valaichchenai in the Eastern province in February 1947 (Philips W.W.A., 1978: 50). He believed it as a rare vagrant to the low-country dry zone. Ranasinghe also considered it as a possible rare vagrants to low lands (Ranasinghe, D.B., 1997)

References:
Legge V., 1880. A History of the birds of Ceylon  1983 second edition.
Nevill H., 1887. Ornithological notes (Ceylon). Taprobanian, 2(5), 131-132.
Phillips W.W.A., 1978 Annotated checklist of the Birds of Ceylon (Sri Lanka) 1978 revised edition.
Phillips W.W.A., 1948. Cuckoo problems of Ceylon. Spolia Zeylanica, 25(2), 45-60.
Ranasinghe, D. B., 1997. Gaps on Field data for Sri Lankan Birds. Loris, 21(4), 170-172.
Siriwardana, U., 2005. Report from the Ceylon Bird Club for 2004. Loris, 24(1&2), 33-35.
Wait W.E., 1931. Manual of the Birds of Ceylon. 2nd edition. Colombo Museum.
Wijesinghe, D. P., 1983. Notes on some Rare Sri Lanka Birds -1. Loris, 16(4), 205-208.



Tuesday, June 3, 2014

Bengal trumpet/Bengal clock-vine/Sky vine/Laurel clock vine (Thunbergia grandiflora)

An introduced plant native to India, Indo-China and Malay peninsula. Very common in home gardens where cultivated as an ornamental vine and also escaped and naturalized in some disturbed areas including secondary forests. Flowering throughout the year.

Sunday, June 1, 2014

හුංගා\කහ හුංගා\ලේ හුංගා [Hunga/Le Hunga/Kaha Hunga]/Stinging Catfish (Heteropneustes fossilis)

Stinging Catfish is a common fish of swamps, ponds, and tanks of low country of both wet and dry zone. Sometime it can be found even in brackish water. Copper red color of young fishes (pic above and referred as Rathu Hunga[Red Hunga]) changes to the dark brown with two yellow lateral bands of the adults. Uniform yellow color forms are also occurs (Refers as Kaha[Yellow] Hunga in vernacular language) and assumes as adults in sexual maturity. When handling it can inflict painful wounds by its pectoral spines. Stinging Catfish is an omnivorous fish.

Friday, May 30, 2014

වා/වල්-මුරුංගා[Wa/Wal-Murunga] (Breynia retusa)

An indigenous shrub found in scrublands, roadsides and waste lands and lands bordering the forests and within forests from lowlands to about 1500m elevation.

Wednesday, May 28, 2014

Asian Slim (Aciagrion occidentale)

Widely distributed insect in sub montane and monatane areas in open grass beside weedy ponds and rank herbage (de Fonseka T., 2000). But probably it has an island wide distribution in suitable habitats, but hardly notice due to its smaller size. Above specimen was photographed in rather lower elevation, a scrub land in Ambagaspitiya (~150m a.s.l.) of Gampaha district.

Saturday, May 24, 2014

Ceylon Ace (Halpe homolea ceylonica)

Rather uncommon insect found in wet zone forests from lowlands to mid hills. Larva feeds on Bambusa vulgaris leaves.

Thursday, May 22, 2014

Yamazakia pusilla [Syn: Lindernia pusilla]

An indigenous common prostrate to ascending herb grows near paddy fields and tank or pond edges from both wet and dry lowlands to about 1000m altitude.  Flowering throughout the year.

Tuesday, May 20, 2014

Lowland Hump-nosed Pit Viper/පහතරට මූකලන් තෙලිස්සා[Pahatharata Mukalantelissa] (Hypnale zara)

An endemic snake restricted to the lowland rain forests of the south-western wet zone up to foot hills of the central highlands.  It is a nocturnal snake and during the day time stay hidden under decaying logs and leaf litter on the forest floor. Maduwage K. et al. recorded of a rare occasion of observing this snake on a shrub up to about 60cm above the forest floor. Furthermore according to them Lowland Hump-nosed Pit Viper is absent in anthropogenic habitats. Above specimen was photographed on a banana shrub - considerable height above the ground- But habitat can't be considered as a primary forest though entirely not a home garden ( 6°22'24.18"N,  80°27'8.22"E). Location -though sort of anthopogenic habitat- is very close to the Gin river as well as Sinharaja forest.

Maduwage Kalana, Silva, A., Manamendra-Arachchi, K.& Pethiyagoda, R. 2009 A taxonomic revision of the South Asian hump-nosed pit vipers (Squamata: Viperidae: Hypnale) Zootaxa 2232: 1–28 pp.


Friday, May 16, 2014

Annotated checklist of vagrant Storks, Herons and Egrets (Family: Ciconiidae and Ardeidae) recorded in Sri Lanka

    Birds that appear outside their normal range are known as vagrants. This post summarizes up to date published sight records of vagrants of Ciconiidae and Ardeidae families (Storks, Herons and Egrets) in Sri Lanka.
   
  Confirmed vagrants 


      1) Black Stork (Ciconia nigra)
W.W.A Philllips’s sight record of two birds at the Bagura , South of Pottuvil on the 20th March 1938 and again few days later at another inundation at Helawe, both near Kumana is the first record of Black Stork in Sri lanka (Phillips W.W.A., 1940).  Second sight record was reported by C.V. Seneviratne in 1998, again a pair of birds from a marshy land near Aruvakkalu, adjacent to the Kala Oya estuary of Southern most boarder of Wilpattu National Park (Seneviratne C.V., 2000). Third sight record is from a place which is fairly inland unlike two previous occasions by W. L. D. P. T. S. D. A.  Goonathilake during the biodiversity survey of the Kala Oya basin in December 2003. He observed a single bird while perching on a Kumbuk tree at the edge of the Kok-maduwa village located near the southern bank of Rajangane reservoir. (Goonathilake, W. L. D. P. T. S. D. A., 2006). Fourth sight record is from Maduru Oya National Park on 21st April 2004 by Dinesh Eransaka Gabadage (Gabadage D.E., 2007). He also reported two birds in a partially inundated area close to the Maduru Oya reservoir.

       2) White Stork (Ciconia ciconia asiatica)
According to the Legge, Bligh met with a single bird in beginning of 1879 at Yala and subsequently after receipt of Bligh’s record, Parker informed of his observation of several at the tank of Nikawaratiya, where it appeared to be breeding in company with egrets and herons. However Legge doubted Parker’s identification since White stork doesn't breed anywhere in India and he was of the idea that Parker may have been mistaken it with Pelican-Ibis (i.e. Painted Stork) (Legge V., 1880: 1470). Col. R. C. Wall reported another sighting again at Yala on 13th August 1961 and another one was observed by Osmar Ismail in a paddy field, 10 miles from Anuradhapura on the Maradankadawela roadside during February 1975 (Phillips W.W.A 1978: 9). Next sight record is also from  a paddy field near Anuradhapura by a Dutch ornithologist during March 1976 (Hoffmann, T. W., 1977) Finally there is a sighting of a single bird at Kalamatiya on March 1985[Third sight record according to the Hoffman] (Hoffmann, T. W., 1986)

     3) Great Bittern [Eurasian Bittern] (Botaurus stellaris stellaris)
A live specimen of a Great bittern was handed over to the Zoological garden, Dehiwela by Sarath Kumara of Panadura on 14th October 1985. It did not feed in captivity and dead on the 16th morning. Later on it was handed over to the museum and preliminary identification of it as Great bittern made at the zoo was confirmed at the Museum. (Gunawardene, W. T. T. P., & Wijesinghe, D. P. 1985)

     4) Goliath Heron [Giant Heron] (Ardea goliath)
First time recorded from Sri Lanka in 4th April 1878. It was shot by Le Mesurrrier on the banks of the Mahawelliganga, a few miles above Kandakardu in the Tamankada pattuwa (Legge V., 1880: 1474-75). Again a female was procured in the beginning of 1879 at Palatupana by Exham Swyny. Another bird probably its mate, being seen about the same time at Willapalawewa(Legge V., 1880: 1474-75). According to the Wait all 2 or 3 available specimens obtained from Sri Lanka are of immature birds (Wait W.E., 1931:426). In February 1975 single bird observed at Kokkari villu in Wilpattu by D. Summers-Smith from the UK (Hoffmann, T.W., 1976)) and another single bird in a small tank near Habarana in February 1979 (Hoffmann, T.W., 1980)

Unconfirmed vagrants:
Species for which there are only one or two sight records exist listed here as unconfirmed vagrants. Problematic records without sufficient details are also included.

    5) Chinese Pond Heron (Ardeola bacchus)
First time recorded by Dieter Zingel (Germany) on 30th April 1995 at Debera wewa (Hoffmann, T. W., 1996). Later on sight record(s) by Rex. I. de Silva (Kotagama S. & Ratnavira G. 2010: 176)

References:

Gabadage D.E., 2007 Sight record of a Black Stork Ciconia nigra at Maduru Oya Siyoth 2(2) :44
Goonathilake, W. L. D. P. T. S. D. A., 2006 Third sight record of the Black Stork Ciconia nigra from Sri lanka Siyoth Vol 1 34-35.
Gunawardene, W. T. T. P., & Wijesinghe, D. P., 1985). The Eurasian Bittern: An Additional to the list of Sri Lanka Birds. Loris, 17(2), 52-53.
Hoffmann, T. W., 1996. Ceylon Bird Club Notes 1995. Loris, 21(1), 16-18.
Hoffmann, T. W., 1986. Notes from the Ceylon Bird Club 1985. Loris, 17(3), 99-101.
Hoffmann, T. W., 1980. Notes from the Ceylon Bird Club 1979. Loris, 15(3), 157-159.
Hoffmann, T. W., 1977. Notes from the Ceylon Bird Club 1976. Loris, 14(3), 154-156.
Hoffmann, T. W., 1976. Notes from the Bird Club 1975. Loris, 14(1), 35-36.
Kotagama, S., Ratnavira, G. 2010. An illustrated Guide to the Birds of Sri Lanka. Field Ornithology Group of Sri Lanka, Colombo.
Legge V., 1880. A History of the birds of Ceylon  1983 second edition.
Phillips W.W.A., 1978 Annotated checklist of the Birds of Ceylon (Sri Lanka) 1978 revised edition
Phillips W.W.A., 1940. Ornithological observations Loris 2(3) 169 – 175
Seneviratne, C.V., 2000. The second sight record of Black Stork Ciconia nigra from Sri Lanka. Sri Lanka Naturalist. The Journal of the Young Zoologist Association. 3(1): 1-2
Wait W.E., 1931. Manual of the Birds of Ceylon. 2nd edition. Colombo Museum.




Sunday, May 11, 2014

බන්ඩි තිත්තයා/පොඩි පෙතියා/ඉපිලිකඩයා [Bandi Thiththaya/Podi Pethiya/Ipilikadaya]/Silver Barb (Puntius vittatus )

Common fish inhabiting ponds, streams, paddy fields and tanks in the low country - both wet and dry zone -  up to an elevation of about 300m. It is very hardy fish and is found even in ponds reduced to liquid mud during the drought (Deraniyagala P.E.P., 1952) It is also recorded from some brackish water bodies (Pethiyagoda R., 1991). Silver Barb feeds mainly on filamentous algae and blue-greens, and rarely on certain animal matters. 

Saturday, May 10, 2014

Philippine Ground Orchid (Spathoglottis plicata)

Native plant of Southeast Asia. Introduced  (Native? >>) as a garden plant and widely cultivated in home gardens in most areas. Also escaped and naturalized in lowland wet and sub montane zones, usually near waterways.

Thursday, May 8, 2014

Drepanosticta bine

An endemic forest damselfly inhabiting shady rain forest streams of South-western wet zone from 50 to 500 m altitude. It is currently known from only 16 localities in Kegalle, Nuwaraeliya, Kaluthara, Rathnapura, Galle and Mathra districts (Bedjanič, M., 2010). Its flying period is from end April-May until September-October.

My observations

1) Observed at Dombagaskandha forest reserve at Ingiriya (One of the above mentioned 16 localities) in June 2011 and July 2012.

2) At Lankagama - a buffer zone village of Sinharaja world heritage site - in July 2008[Two years before formal description]. ( Although it has been already recorded from Kudawa side of the Sinharaja not so far from the Neluwa entrance. A stream in Haycock range of Hiniduma area is the nearest location mentioned in above 16 localities to the Lankagama)

3) At Halpankandha forest reserve (7°12.806'N, 80°08.894'E) of Meerigama in Gampaha district in May 2012 (New locality)


References

Bedjanič, M., 2010. Three new Drepanosticta species from Sri Lanka (Zygoptera: Platystictidae). Odonatologica 39(3): 195-215. 

Tuesday, May 6, 2014

මා වේවැල්/වඳුරු වැල්/පුවක් වැල්/කත් වැල්[Ma We-val/Vandhuru val/Puwak val/Kath val] (Calamus thwaitesii)

An indigenous liana occurs in wet lowlands and lower montane forests below 1500m a.s.l. and in intermediate lowlands from the foothills of Samanala nature reserve to southern Sinharaja (However absent in Northern Sinharaja), Hiniduma-Kanneliya and northward to Kandy upper Mahaweli and knuckles range. Also in some isolated hills in the dry zone such as Ritigala, Dimbulagala (Gunners Quoin), Nilgala and Sigiriya. Flowering from December to May and fruiting from August to October. Rattans used in furniture manufacturing and basketware and leaves for thatching.

Sunday, May 4, 2014

Common shrub frog (Pseudophilautus popularis)

Common shrub frog is widely distributed species occurs in forest edges, grasslands and also in anthropogenic habitats such as home gardens and roadsides in wet lowlands. Males active at dusk and sometimes start calling even during day time in rainy days perched on low vegetation 0.3-1 m above the ground. 

Friday, May 2, 2014

Pomatocalpa maculosum

Rather rare epiphyte on trees by streams in the lowland wet zone forests up to 762m altitude. Flowering from January to March.

Monday, April 28, 2014

Thrixspermum pulchellum

Rather common epiphyte on trees in wet lowland forests up to about 610m a.s.l. Flowering from April to June.

Saturday, April 26, 2014

Black Angle (Tapena thwaitesi)

"A great rarity, and I have never personally caught a specimen. A native collector has sent me specimens from Kandy, Deniyaya and Kottawa" - Ormiston W., 1924

Rare insect occurs in low country wet zone forests up to mid hills. Larva feeds on leaves of  Dalbergia pseudo-sissoo (බඹර වැල්

Above male specimen was photographed at Gileemale forest reserve in mid April.

Thursday, April 24, 2014

Phalaenopsis deliciosa

Rare native Epiphytite, on trees in the lowland wet zone forests up to 305m a.s.l. Flowering September. 

Tuesday, April 22, 2014

Blossom krait/මල් කරවලා/නිහාළුවා [Mal karavala/Nihaluva] (Balanophis ceylonensis)

Blossom krait is a rear-fanged mildly venomous terrestrial snake found among leaf litter in forests of low country to central hills.  Also occurs in knuckles range. It feeds on frogs, skinks, and insects. Blossom krait is rather uncommon snake endemic to the Sri Lanka . 

Friday, April 18, 2014

Annotated checklist of vagrant Ducks(Family:Anatidae) of Sri Lanka

    Birds that appear outside their normal range are known as vagrants. This post listed up to date published sight records of vagrants of the family Anatidae (Ducks) in Sri Lanka.

    Confirmed vagrants

    1) Fulvous Whistling-duck (Dendrocygna bicolor)
First reference of its occurrence in Sri Lanka is from Wait (Wait W.E., 1931:447). He noted about few specimens once obtained near Mannar and a single sight record from Balapitiya in Southern province. He further noted that he had been told of a sighting of it near Giant’s tank (Wait W.E., 1931:447). C.E. Norris wrote in 1951 that Fulvous Whistling Duck has been recorded as a breeding resident though not recent reports have been received regarding its status. And he suspected that it may still breeds on some of larger tanks and has been overlooked (Norris, C. E., 1951). There is an unconfirmed report of a small flock in Wilpattu National Park in 1962 (Savage, C. D. W. ,1968) and another sight record at Andankulam tank near Tricomalee in the last week of February 1967 (Phillips W.W.A, 1978:11). Some recent sight records of it are 
  1) Single bird at Bellanwila-Attidiya on December 1990 (Hoffmann, T. W., 1991),
  2) Single bird at Ridiyagama on December 1992 (Hoffmann, T. W. , 1993)
  3) Two birds at Wilmitiya tank on March 1995 (Hoffmann, T. W., 1996
  4) Two ducks counted during 15th annual waterfowl census conducted in January 1998 (Hoffmann, T. W. 1998)

    2) Greylag Goose (Anser anser rubrirostris)
Single specimen of small, young male procured by then museum collector in March 1922 from a paddy field about 6 miles from Kesbewa of Colombo district is the only instance of its occurrence in Sri Lanka. It was feeding with two others at the time (Wait W.E., 1931:444). Phillips noted of "non authenticated sight records during recent years from Hambantota and Jaffna areas of parties of Geese". Those he believed as possible vagrants of either this species or Bar-headed goose (Anser indicus) (Phillips W.W.A, 1978:11)

    3) Ruddy Shelduck [Brahminy Duck] (Tadorna ferruginea)
Vincent Legge noted an observation of a pair at the ‘long lagoon which runs inland from Mullaittivu’ by Capt. Wade-Dalton of the 57th Regiment during February 1876 (Legge V., 1880: 1404). Flocks of 8 observed at Rufouse kulam lagoon on the east coast by Iris Darton on her visit to Arugambay on 4-5 visits on March of 1948 (Phillips, W. W. A., 1948) and solitary bird was seen at Hambantota 2-3 times during 1949-50 migrate season. (Norris, C.E., 1950). In 29th November 1974 a pair reported from Malala lewaya by K.G.H. Munidasa (Hoffmann, T. W., 1975 & Phillips W.W.A. 1978:12). Subsequent sight records are -
  •     During the survey of migratory waterfowls in Sri Lanka Anthony Powel observed 2 ducks on  the edge of the Jaffna lagoon near the Vaddukoddai jetty (Kayts islands road to abandoned ferry point) on 29th January 1984 (Powell, A., 1984,  Hoffmann, T. W., 1985a &                Hoffmann, T. W., 1985)
  •     Single female was observed in the Jaffna during 1989 waterfowl census conducted by CBC in  January 1989 (Hoffmann, T. W., 1989)
  •     During the 7th annual waterfowl census in 1990 observed 3 in Vankalai of Mannar. [It is the  5th record of this duck ] (Hoffmann, T. W. 1990 & Hoffmann, T. W., 1991)
  •     Single bird from Bundala during 2009-2010 migrate season (Warakagoda D. & Sirivardana U., 2011) See also - http://www.jetwingeco.com/newsletter/october-2009-january-2010 and http://www.lakdasun.org/forum/index.php?topic=1293.0 
  •      Moditha Kodikara Arachchi recorded 3 birds at the Vankalai Sanctuary on 8.2.2015. (http://www.ceylonbirdclub.org/the_ceylon_bird_club_news.php)
    4) Gadwall (Anas strepera strepera)
Single specimen collected at Palatupana of Hambantota district is the first report of its occurrence in Sri Lanka. (Wait W.E., 1931:450). Single duck seen at Bundala in early January of 1984 by Robert Tolk a Dutch visitor is the 2nd record of it (Hoffmann, T. W., 1985a) & Hoffmann, T. W., 1985). Kotagama & Ratnavira mention about a sight record in 1993 quoting CBCN 1993, Jan: 01 (Kotagama S. & Ratnavira G. 2010: 159).  Two birds were seen at Mannar area during the 2003 water bird census. (Siriwardana, U., 2003). It is the 4th record of it in Sri Lanka (Warakagoda, D., 2004)

    5) Tufted Duck (Aythya fuligula)
First record of Tufted Duck in Sri Lanka is the specimen of a male taken from a small flock of 30-40 birds on a tank near Dandagamuwa by H.G. Pandittesekera in 4th February 1949 (Phillips  W.W.A., 1949 & Savage, C. D. W. ,1968). Two male birds also observed by R. Mc. L. Cameron on 4th February 1962 at Giant tank of Mannar (Phillips W.W.A, 1978:13)

Unconfirmed vagrants:
Species for which there are only one or two sight records exist categorized here as unconfirmed vagrants. Problematic records without sufficient details are also included.

    6) Mallard (Anas platyrhynchos platyrhynchos)
In his monograph on Sri Lankan birds Vincent Legge had added a note on Mallard stating– “I have sportsman’s authority for the occurrence of the Mallard (A.boschas, Linn.) in the Jaffna district; but I am inclined to think that the Indian Wild Duck has been mistaken for it” (Legge 1880: 1426). W.W.A. Phillips also included it in his article supplied to Loris volume 4 on ducks, stating that it is possibly a rare winter straggler to some of the coastal lagoons in the West and South (Phillips, W.W.A., 1948) though he excluded it from his annotated checklist of the Birds of Ceylon (Phillips W.W.A, 1978). Kotagama S. & Ratnavira G. noted a recent sight record of a single bird at Kalamatiya on 19th January 1986 (Kotagama S. & Ratnavira G. 2010: 160 quoting CBCN 1986, Jan: 04). However CBC listed it in their Appendix 1 (http://www.ceylonbirdclub.org/Appendix-I.pdf) under the criteria ‘It is likely to occur as a migrant in Sri Lanka, and is reported with sufficient detail, but also could be of domesticated or captive origin in Sri Lanka

    7) Marbled Teal (Marmarnetta angustirostris)
Three unconfirmed but independent reports of sightings in January 1984 are the only record of occurrence of Marble Teal in Sri Lanka (Hoffmann, T. W., 1985a) & Hoffmann, T. W., 1985). The first was reported from Deberawewa and Bundala area, second from the Chilaw and the third again from Deberawewa. In all three cases observers were not familiar with the duck and looked it up in guides and came to the conclusion that it is this duck. In the first instance the identification was confirmed by a foreign visitor familiar with the species(Hoffmann, T. W., 1985a)CBC has listed these sight records under Appendix 2 of its country list (http://www.ceylonbirdclub.org/Appendix-II.pdf)) under the criteria of the reports ‘lacks sufficient diagnostic detail or, where necessary, sufficient comparison with ‘confusion’ species or subspecies; and there is therefore doubt as to the identification of the bird concerned’.

    8) Red-crested Pochard (Netta rufina)
Base on Layard’s information Legge doubtfully added this species to his list. According to the Legge, Layard has observed two or three pairs through his telescope for several weeks on a piece of brackish water between Jaffna and ChavagacherryLayard also got a confirmation from a native by showing a head of F.rufina (i.e. N.ruffina) which he received from Calcutta. It was identified by that native as a bird which he is familiar with and had killed on that very piece of water though he had not seen them elsewhere.  Layard had also written to Legge subsequently that he is sure he identified the bird correctly (Legge V., 1880: 1428-1429). Layard’s observation was made in 1854 and later on it has certainly been seen at Hambantota (Savage, C. D. W., 1968 & Phillips, W.W.A., 1948)

    9) Common Pochard (Aythya ferina)
Vincent Legge noted this species as a likely to occur one in Ceylon based on information he received from the Varian of the public work department. A duck with “Canvas-back” which Varian had shot on Topoor tank may have been a Common or red-headed Pochard (Anas ferina) according to the Legge. (Legge V., 1880: 1430).  Other than that up to date no other observation of it has been reported in Sri Lanka. 

References:

Hoffmann, T. W., 1998. The 1998 Waterfowl census in Sri Lanka. Loris, 21(5), 204-209.
Hoffmann, T. W., 1996. Ceylon Bird Club Notes 1995. Loris, 21(1), 16-18.
Hoffmann, T. W., 1993. Notes from the Ceylon Bird Club, 1992. Loris, 20(1), 12-14.
Hoffmann, T. W., 1991. Notes from the Ceylon Bird Club, 1990. Loris, 19(3), 103-105.
Hoffmann, T. W., 1990. The 1990 Waterfowl census in Sri Lanka. Loris, 19(1), 38-41.
Hoffmann, T. W., 1989. The 1989 Waterfowl Census in Sri Lanka. Loris, 18(4), 160-164.
Hoffmann, T. W., 1985a. The 2nd Duck count in Sri Lanka. Loris, 17(1), 19-24.
Hoffmann, T. W., 1985. Notes from the Ceylon Bird Club 1984. Loris, 17(1), p10-12.
Hoffmann, T. W., 1975. Notes From The Ceylon Bird Club, 1974. Loris, 13(5), 275-276.
Kotagama, S., Ratnavira, G. 2010. An illustrated Guide to the Birds of Sri Lanka. Field Ornithology Group of Sri Lanka, Colombo.
Legge V., 1880. A History of the birds of Ceylon  1983 second edition.
Norris, C. E., 1951. Decrease of Wildfowl. Loris 6(1), 315-317.
Norris, C. E., 1950. Migrants, 1949-1950. Loris, 5(4), 171.
Phillips W.W.A., 1978 Annotated checklist of the Birds of Ceylon (Sri Lanka) 1978 revised edition
Phillips W.W.A., 1949 The Tufted Duck Loris 5(1), 88.
Phillips W.W.A., 1948. Ducks 1947/48. Loris, 4(6), 498 - 504.
Powell, A., 1984. A Survey of Migratory Waterfowl in Sri Lanka. Loris, 16(5), 260-263.
Savage, C. D. W., 1968. Wetlands and wildfowl of Ceylon. Loris, 11(3), 147-150.
Siriwardana, U., 2003. The 2003 Waterbird Census in Sri Lanka. Loris, 23(3&4), 32-35.
Wait W.E., 1931. Manual of the Birds of Ceylon. 2nd edition. Colombo Museum.
Warakagoda D. & Sirivardana U., 2011. Report from the Ceylon Bird Club for 2008-2011, Loris 26(1&2), 46-50
Warakagoda, D., 2004. Report from the Ceylon Bird Club for 2003 Loris, 23(5&6), 37-41

Wednesday, April 16, 2014

Monday, April 14, 2014

ගල් පාඬියා[Gal Paandiya]/ගල් පාඩුරුවා[Gal Paanduruwa]/Stone Sucker (Garra ceylonensis)

An endemic fish found in fast flowing streams throughout the island, particularly in the wet zone. Adult Stone Suckers are bottom dwelling fish and stay clinging to rocks using its suckers while juveniles are found in all levels of the water column till their suckers are fully developed. It is often found in rock pools of streams rather than water streams with sandy substrates. It is said that Stone Suckers ascend small rocky streams to breed. 

Saturday, April 12, 2014

Indian Strawberry (Potentilla indica [Syn: Duchesnea indica])

An indigenous herb with prostrate stems, found along roadsides and disturbed habitats in montane zone. Native plant of Eastern Asia. Strawberry like small fruits are scarlet red when ripe. Flowering and fruiting from December to February. Common in Horton plains

Thursday, April 10, 2014

Tuesday, April 8, 2014

තක්කඩ[Takkada] (Scaevola taccada)

Rounded and mound like shrub or small tree grows on shores and occasionally somewhat inland areas. 

Sunday, April 6, 2014

Large 4-Lineblue (Nacaduba pactolus)

Large 4-Lineblue is a rare butterfly found in forests and well wooded areas of all elevations up to the higher hills. It is the only Nacaduba species of the island in which antennae are white-tipped and also the largest of them. Entada rheedei (පුස් වැල්) is its only known larval host plant in Sri Lanka.