Showing posts with label Goliath Heron. Show all posts
Showing posts with label Goliath Heron. Show all posts

Wednesday, July 15, 2009

A sight record of Goliath Heron (Ardea goliath) at Arugam Bay, South Eastern Sri Lanka

During a field survey of Mangrove sites at Arugam bay, we were able to record a Goliath Heron (Ardea goliath) on 10th March 2009 at around 11h30. It was feeding in the marshy area adjacent to the lagoon.

We positively identified this heron as a Goliath Heron based on the greater size compared to the Grey Heron which fed in the vicinity and other morphological characteristics. The prominent, widely spread black color patches on neck, large grayish bill and grey legs helped us to identify the species. Unfortunately, we were unable to photograph it.


Goliath Heron (Ardea goliath) is the largest among the Herons, about 140cm body length. It is very much larger than the Grey heron (Ardea cinerea) and the Purple Heron (Ardea purpurea), which are commonly found in Sri Lanka. It has a darker bill, brown crown, plain grey upper wings, dark chestnut under wings and dark grey legs. Goliath herons typically found in marshes, lagoons, sea shores and near fresh or saline water bodies in dry lowlands.

This species was recorded only handful of occasions in the island and that includes two specimen records. Hence, it is categorized as a vagrant species in Sri Lanka. Following records are documented in ‘Annotated checklist of the Birds of Ceylon’ by W.W.A. Phillips (1978).

“Specimens were shot by Mr. Le Mesurrier on 4th April, 1878, on the banks of the Mahaweli ganga, a few miles above Kandakardu in the Tamankada Pattuwa and by Mr. Exham Swyny, early in 1879, at Palatupane in the Kirinde District. Another example was seen on a latter occasion at Willapalawewa. Recently one was seen at Kokkare Villu, in Wilpaththu, by Mr. D. Summers-Smith and Dr. T.S.U. De Zylva, in February 1975”.

Recently a single bird was recorded at Negambo Lagoon in 1990 by R.I. De Silva.

Reported by FOGSL members H.G. Salindra Kasun Dayananda and K.D. Sameera Ariyarathna.

Sunday, April 26, 2009

Birds observed during March 2009

Sri Lanka Birds’, a citizen science programme to ensure people’s participation towards the conservation of birds, completed another successful month by the end of March 2009. This report provides an analysis of data entered by ‘Sri Lanka Birds’ members for the month. This analysis is based on the data downloaded on 14th April 2009.

Membership
New members 24
Total members 278
FOGSL warmly welcomes new members to the ‘Sri Lanka Birds’ community.

Observations
Total Number of Observations 1492
Number of Species 195
Number of Endemic Species 16
Number of Proposed endemic Species 7
Number of migrant species 38

Observations of Brahminy Starling, Chestnut-winged Cuckoo, Yellow Wagtail and Malayan Night-heron are noteworthy records. Most significant observation recorded in the system was the sighting of Goliath Heron at Arugam Bay by Salindra Kasun Dayananda on 10th March. Goliath Heron was reported only in handful of occasions in Sri Lanka and therefore considered as a vagrant. Detailed report on this observation will be published shortly.

Nesting records
Number of observations 11
Number of species 9
Species (Black-rumped Flameback, Brown Hawk-owl, Brown-backed Needletail, Common Hoopoe, House Crow, Purple-rumped Sunbird, Red-vented Bulbul, Spotted Dove, White-bellied Drongo)
Two other species i.e. Drongo Cuckoo and Pheasant-tailed Jacana were reported in breeding stages other than nesting.

Mostly recorded species (No: of observations)
House Crow (62)
Red-vented Bulbul (59)
White-bellied Drongo (52)
Yellow-billed Babbler (51)
Common Tailorbird (48)

Top five users (No: of observations)
Newton Jayawardane (660)
Rienzie Fernando(377)
Chandanie Wanigatunge (163)
Salindra Kasun Dayananda (122)
Sandun Perera (101)

A total of 34 locations were visited during March by ‘Sri Lanka Birds’ members. Highest number of observations was made at Ragama (428) as in many previous months.

Current statistics describing the number of field visits, number of observations and bird species, as well as the number of users registered in the system, are displayed on the login page of ‘Sri Lanka Birds’ - www.worldbirds.org/srilanka .

FOGSL highly appreciates the contributions of members towards the conservation of birds through this initiative.