Swiftlet

swiftletsBird's Nestbirds nest soupCollocaliiniedible-nest swiftletSwallow's Nest
Swiftlets are birds contained within the four genera Aerodramus, Hydrochous, Schoutedenapus and Collocalia.wikipedia
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Animal echolocation

echolocationecholocateecholocating
What distinguishes many but not all species from other swifts and indeed almost all other birds is their ability to use a simple but effective form of echolocation to navigate in total darkness through the chasms and shafts of the caves where they roost at night and breed.
Echolocating animals include some mammals and a few birds; most notably some bat species and odontocetes (toothed whales and dolphins), but also in simpler forms in other groups such as shrews, and two cave dwelling bird groups, the so-called cave swiftlets in the genus Aerodramus (formerly Collocalia) and the unrelated Oilbird Steatornis caripensis.

Edible bird's nest

bird's nest soupbird's nestBirds' nests
The nests of some species are built entirely from threads of their saliva, and are collected for the famous Chinese delicacy bird's nest soup.
Edible bird's nests are bird nests created by edible-nest swiftlets, Indian swiftlets, and other swiftlets using solidified saliva, which are harvested for human consumption.

Swift

Apodidaeswiftstrue swifts
They form the Collocaliini tribe within the swift family Apodidae.
The taxonomy of the swifts is complicated, with genus and species boundaries widely disputed, especially amongst the swiftlets.

Gunung Mulu National Park

Gunung MuluMuluMulu Caves
Some examples of caves include the Niah Caves at Niah National Park & Gunung Mulu National Park which are all located in Sarawak, Malaysian Borneo.
Millions of bats exit the cave almost every evening in search of food in a spectacular exodus while flocks of swallows and swiftlets enter the cave.

Collocalia

collocalia fuciphagaswiftlets
Collocalia is a genus of swifts, containing some of the smaller species termed "swiftlets".

El Nido, Palawan

El NidoVigan IslandMatinloc Island
The Philippine municipality of El Nido in Palawan, known for its limestone cliffs and pristine beaches, is home to a thriving bird's-nest market.
1140 was approved changing the name of the town from Bacuit to its present name El Nido after the edible nests of swiftlets (collocalia fuciphaga), found in the crevices of its limestone cliffs.

Aerodramus

Aerodramus is a genus of small, dark, cave-nesting birds in the Collocaliini tribe of the swift family.

Uniform swiftlet

Collocalia vanikorensisCollocalia salangana
The uniform swiftlet, (Aerodramus vanikorensis), also known as the Vanikoro or lowland swiftlet, is a gregarious, medium-sized swiftlet with a shallowly forked tail.

Mariana swiftlet

Guam swiftletAerodramus bartschiCollocalia bartschi
The Mariana swiftlet or Guam swiftlet (Aerodramus bartschi) is a species of swiftlet in the Apodidae family.

Himalayan swiftlet

Indochinese swiftletAerodramus brevirostrisCollocalia brevirostris
This swiftlet was formerly placed in the genus Collocalia.

Germain's swiftlet

German's swiftletA. germaniCollocalia germani
This swiftlet is 12 cm long and weighs 13 to 14 grams.

Bird

birdsAvesavian
Swiftlets are birds contained within the four genera Aerodramus, Hydrochous, Schoutedenapus and Collocalia.

Tribe (biology)

tribesubtribetribes
They form the Collocaliini tribe within the swift family Apodidae.

Asia

AsianAsian continentAsian countries
The group contains around thirty species mostly confined to southern Asia, south Pacific islands, and northeastern Australia, all within the tropical and subtropical regions.

Pacific Ocean

PacificSouth PacificWestern Pacific
The group contains around thirty species mostly confined to southern Asia, south Pacific islands, and northeastern Australia, all within the tropical and subtropical regions.

Australia

AUSAustralianCommonwealth of Australia
The group contains around thirty species mostly confined to southern Asia, south Pacific islands, and northeastern Australia, all within the tropical and subtropical regions.

Tropics

tropicaltropictropical zone
The group contains around thirty species mostly confined to southern Asia, south Pacific islands, and northeastern Australia, all within the tropical and subtropical regions.

Subtropics

subtropicalsub-tropicalsubtropical climate
The group contains around thirty species mostly confined to southern Asia, south Pacific islands, and northeastern Australia, all within the tropical and subtropical regions.

Cave

cavescaverncaverns
What distinguishes many but not all species from other swifts and indeed almost all other birds is their ability to use a simple but effective form of echolocation to navigate in total darkness through the chasms and shafts of the caves where they roost at night and breed.

Chinese cuisine

ChineseChinese foodChinese restaurant
The nests of some species are built entirely from threads of their saliva, and are collected for the famous Chinese delicacy bird's nest soup.

Taxonomy (biology)

taxonomictaxonomytaxonomist
The swift family remains one of the more complicated groups of birds in taxonomic research, but the swiftlet tribe is a rather well-defined group.

Systematics

systematicsystematistbiosystematics
Its internal systematics is confusing; the plumage is usually dull, with shades of black, brown, and gray; from their outward appearance, most species are very similar.

Three-toed swiftlet

Papuan swiftletCollocalia papuensis
Swiftlets have four toes, except the Papuan swiftlet which lacks the hallux (back toe).

Toe

halluxbig toetoes
Swiftlets have four toes, except the Papuan swiftlet which lacks the hallux (back toe).

Flight feather

rectricesprimariesflight feathers
Flight is mainly gliding due to very long primary feathers and small breast muscles.