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The Sri Lanka grey hornbill is a large bird at 45 centimetres (18 in) in length. It has grey wings with black primary flight feathers, a grey back, and a brown crown. Its long tail is blackish with white sides, and the underparts are white. The long, curved bill has no casque. Sexes are similar, although the male has a cream-coloured bill ...
As such, they are often called "grey hornbills". They have black and grey eye rings and their eyes are usually dark with black irises. All of the species have different coloured bills: the Indian grey hornbill has a dark greyish bill, the Sri Lanka grey hornbill has a pale yellowish bill, and the Malabar grey hornbill has a more yellowish ...
Legge – A History of Birds of Ceylon: Included 17 species in the present list 1931: 25: Wait – Manual of Birds of Ceylon: Excluded the red faced-malkoha 1944: 22: Whistler – Avifaunal Survey of Ceylon: 1946: 20: Ripley – Comments to Endemic Birds of Ceylon: Grey hornbill, rufous babbler and red-faced malkoha were excluded 1952: 21
In 2012 IUCN National Red List of Sri Lanka, much more comprehensive study on spiders and other local fauna had taken place. Afterwards, two books named An introduction to common Spiders of Sri Lanka and Tiger Spiders - Poecilotheria of Sri Lanka by Ranil P. Nanayakkara were published in 2014 and 2013 respectively. Numerous publications and ...
Grey hornbill may refer to one of several distinct species of hornbills: African grey hornbill, Tockus nasutus; Malabar grey hornbill, Ocyceros griseus;
The Indian grey hornbill, which is found mainly on the adjoining plains, is easily told apart by its prominent casque, and in flight by the white trailing edge of the entire wing. The Malabar grey hornbill has a grey back and a cinnamon vent. The long tail is blackish with a white tip, and the underparts are grey with white streaks.
Recent genetic data show that ground hornbills and Bycanistes form a clade outside the rest of the hornbill lineage. [6] They are thought to represent an early African lineage, while the rest of Bucerotiformes evolved in Asia.
The Indian grey hornbill is a medium-sized hornbill, measuring around 61 cm (24 in) in length. [3] The upper parts are greyish brown and there is a slight trace of a pale supercilium. The ear coverts are darker. The flight feathers of the wing are dark brown with a whitish tip. The tail has a white tip and a dark subterminal band.
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