Tuesday, September 1, 2015
Sunday, August 30, 2015
Bulwer's Petrel - Bulweria bulwerii
Bulwer's Petrel Bulweria bulwerii
The Bulwer's petrel (Bulweria bulwerii) is a small petrel in the family Procellariidae, and is one of two species in the genus Bulweria (Bonaparte, 1843). This bird is named after the Scottish naturalist James Bulwer.
The Bulwer's petrel (Bulweria bulwerii) is a small petrel in the family Procellariidae, and is one of two species in the genus Bulweria (Bonaparte, 1843). This bird is named after the Scottish naturalist James Bulwer.
This very long-winged petrel is 25–29 cm in length with a 78–90 cm wingspan. It has mainly brown plumage and a long pointed tail. It has a buoyant twisting flight as it picks planktonic food items from the ocean surface. Bulwer's petrel is migrant or vagrant birds in Sri Lanka.
Wednesday, August 26, 2015
Cape petrel - Daption capense
The Cape petrel is a unique looking petrel. It has a black head and
neck, and a white belly, breast, and its underwing is white with a black
border. Its back, and upperwings are black and white speckled, as is
its tail which also has a band of black. When fully grown, their wings
span 86 cm (34 in) and they are 39 cm (15 in) long. Cape petrel is a migrant or vagrant birds in Sri Lanka.Tuesday, August 25, 2015
Little grebe - Tachybaptus ruficollis
The little grebe (Tachybaptus ruficollis), also known as dabchick, is a member of the grebe family of water birds. At 23 to 29 cm (9.1 to 11.4 in) in length it is the smallest European member of its family. It is commonly found in open bodies of water across most of its range. little grebe is breeding resident birds in Sri Lanka.
The little grebe is a small water bird with a pointed bill. The adult is unmistakable in summer, predominantly dark above with its rich, rufous colour neck, cheeks and flanks, and bright yellow gape. The rufous is replaced by a dirty brownish grey in non-breeding and juvenile birds. From East Kolkata Wetlands, Bengal, India
Juvenile birds have a yellow bill with a small black tip, and black and white streaks on the cheeks and sides of the neck as seen below. This yellow bill darkens as the juveniles age, eventually turning black in adulthood.
In winter, its size, buff plumage, with a darker back and cap, and “powder puff” rear end enable easy identification of this species. The little grebe's breeding call, given singly or in duet, is a trilled repeated weet-weet-weet or wee-wee-wee which sounds like a horse whinnying.
Juvenile birds have a yellow bill with a small black tip, and black and white streaks on the cheeks and sides of the neck as seen below. This yellow bill darkens as the juveniles age, eventually turning black in adulthood.
In winter, its size, buff plumage, with a darker back and cap, and “powder puff” rear end enable easy identification of this species. The little grebe's breeding call, given singly or in duet, is a trilled repeated weet-weet-weet or wee-wee-wee which sounds like a horse whinnying.
Tuesday, August 18, 2015
Ceylon Grey Hornbill - Ocyceros gingalensis
Ceylon Grey Hornbill Ocyceros gingalensis
(Sri Lanka Grey Hornbill)
(Endemic bird in Sri Lanka)
Sinhalese - Kedetta
Tamil - Irattai - kondu- kuruvi
The Grey Hornbill is a bird of forest and well wooded areas. It is found
both in the wet and dry zones and ascends the hills up to about 1300 metres. In
the Dry zone it favours riverine forests though in the Wilpattu National Park
it inhabits forest close to the villus as well. It is a grotesque looking bird
with an enormous decurved beak, long neck and long tail. Both sexes have
similar plumage but the beak of the female is dark with a long cream patch on
the upper mandible in contrast to the mostly pale yellow beak of the male.
Young are similar to adults but have shorter beaks which are pale yellow,
completely devoid of any black colour. Their irides too are grey in contrast to
the red irides of adults. The Grey Hornbill generally occupies mid levels of forest
and moves about in pairs, though flocks too are met with near fruiting trees.
The food consists mostly of fruit but animal matter is also captured especially
when young have to be fed. The call is a loud kaa, kaa, kaa. At
times a continuous kak,kak,kak, kak,kak call is
uttered.
Hornbills are well known for their remarkable nesting habits. The female
chooses a natural cavity in a tree generally about six to ten metres from
ground level and incarcerates herself by walling up the entrance with possibly her
own droppings and sediment from the nest floor, leaving only a small vertical
slit. The vertically flat beak is admirably suited to be used as a mason’s
spoon to plaster the opening. The bird moves it up and down, vibrating it
sideways at the same time to add and smoothen the walling up material. She
moults her flight and tail feathers while inside.
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