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But recently, the pygmy swiftlet Collocalia troglodytes was discovered making similar clicking noises in and outside its cave. [6] Characteristics of behavior, such as what materials other than saliva the nests contain, can be used to differentiate between certain species of Aerodramus. [7]
Aerodramus leucophaeus is closely related to the species of the A. Sawtelli. Characteristics include slightly short wings, forked tail, dark brown upperparts, and grey brown underparts. [3] Birds' wings typically get shorter the closer they live to the equator, explaining why these swiflets are located closer to the Southern Island region.
The edible-nest swiftlet (Aerodramus fuciphagus), also known as the white-nest swiftlet, is a small bird of the swift family which is found in Southeast Asia. Its opaque and whitish bird nest is made exclusively of solidified saliva and is the main ingredient of bird's nest soup , a delicacy of Chinese cuisine.
Collocalia is a genus of swifts, containing some of the smaller species termed "swiftlets".Formerly a catch-all genus for these, a number of its former members are now normally (though not by all authors) placed in Aerodramus.
The Indian Swiftlet or Indian Edible-Nest Swiftlet (Aerodramus unicolor) is a small swift. It is a common resident colonial breeder in the hills of Sri Lanka and south west India. The half-cup nest is built on a vertical surface, often in a cave. The male swift uses thick saliva to construct the white, shiny nest into which two eggs are laid.
The main distinguishing characteristics of the volcano swiftlet are its tail fork and black wings that appear glossed with a purple shimmer. One of the defining differences between males and females is the condition of the tarsus. The male swiftlet has a bare tarsus while the female has a feathered tarsus. Both sexes however share the ...
The uniform swiftlet (Aerodramus vanikorensis), also known as the Vanikoro swiftlet or lowland swiftlet, is a gregarious, medium-sized swiftlet with a shallowly forked tail. The colouring is dark grey-brown, darker on the upperparts with somewhat paler underparts, especially on chin and throat.
The Himalayan swiftlet has a twittering chit-chit roosting call, and also has a piercing teeree-teeree-teeree call.. What distinguishes many, but not all, swiftlet species from other swifts and indeed almost all other birds (the oilbird being an exception) is their ability to use a simple but effective form of echolocation to navigate through the darkness of the caves where they roost at night ...