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Authentic bird's-nest soup is made from nests of some species of swiftlet, mainly the edible-nest (or white-nest) swiftlet (Aerodramus fuciphagus) and the black-nest swiftlet. Instead of twigs, feathers and straw, these swiftlets make their nest only from strands of their gummy saliva, which hardens when exposed to air.
The hardened saliva nests of the edible-nest swiftlet and the black-nest swiftlet have been used in Chinese cooking for over 400 years, most often as bird's nest soup. [21] Over-harvesting of this expensive delicacy has led to a decline in the numbers of these swiftlets, [ 22 ] [ 23 ] especially as the nests are also thought to have health ...
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.
A single egg constitutes a clutch, but the birds may breed more than once a year. The swiftlets utter twittering and chirping sounds as well as the echolocation clicks used to navigate inside the nesting and roosting caves. Most birds in a colony leave their cave at dawn to forage, returning at sunset to roost.
Plume-toed swiftlet (Collocalia affinis) Grey-rumped swiftlet (Collocalia marginata) Ridgetop swiftlet (Collocalia isonota) Tenggara swiftlet (Collocalia sumbawae) Drab swiftlet (Collocalia neglecta) Glossy swiftlet (Collocalia esculenta) Satin swiftlet (Collocalia uropygialis) Bornean swiftlet (Collocalia dodgei) Cave swiftlet (Collocalia linchi)
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 ...
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 Seychelles swiftlet (Aerodramus elaphrus) is a small bird of the swift family. It is found only in the Seychelles Islands in the Indian Ocean. It is 10–12 cm long with a wingspan of 28 cm and a weight of about 10 g. The upperparts are dark grey-brown and are slightly paler on the rump.