Thai National Parks

Birds of Thailand

Species of Thailand

Edible-nest swiftlet

Binomial name: Aerodramus fuciphagus, Carl Peter Thunberg, 1812

The edible-nest swiftlet (Aerodramus fuciphagus) is a small bird of the swift family which is found in South-east Asia. Its nest is made of solidified saliva and is used to make bird's nest soup.


It is 11 to 12 cm long and weighs 15 to 18 grams. The plumage is blackish-brown above, paler on the underparts. The rump is slightly paler than the rest of the upperparts. The tail is slightly forked and the wings are long and narrow. The bill and feet are black.

The subspecies A. f. micans is paler and greyer while A. f. vestitus is darker with a rump that is less obviously paler.

Several calls are uttered including a loud, rattling call used for echolocation in dark caves.


The edible-nest swiftlet feeds over a range of habitats from coastal areas to the mountains, occurring up to 2, 800 metres above sea-level on Sumatra and Borneo. Its diet consists of flying insects which are caught on the wing. It often feeds in large flocks with other species of swift and swallow.

It breeds in colonies in caves, in a cleft in a cliff or sometimes on a building. The bracket-shaped nest is white and translucent and is made of layers of hardened saliva attached to the rock. It measures about 6 cm across with a depth of 1.5 cm and a weight of about 14 grams. Two white, oval, non-glossy eggs are laid.

Relationship with humans

The nest used in bird's nest soup are composed almost entirely of saliva with little or no plant material. The soup is made by soaking and steaming the nests in water and is said to be an aphrodisiac and to have various medicinal qualities. The nests can fetch high prices and many colonies are harvested commercially.

Some populations such as those in the Andaman and Nicobar Islands have been harvested extensively leading to them being considered critically threatened under the IUCN criteria.

The use of artificial bird houses is growing. A detailed account of modern nest farming and marketing techniques is given by Jordan (2004). In Malaysia, "farming" of nests is performed in purpose-built structures or old empty houses with "tweeters" playing recordings of bird calls on the roof to attract swiftlets. In urban areas, such "bird houses" may be considered a nuisance by neighbours due to the loud bird calls and bird feces.

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Scientific classification

Aerodramus fuciphagus


  • Aerodramus fuciphagus dammermani, Bernhard Rensch, 1931

    Range: Flores, known from only a single specimen

  • Aerodramus fuciphagus fuciphagus, Carl Peter Thunberg, 1812

    Range: The nominate subspecies found in Java, Bali and the western Lesser Sunda Islands

  • Aerodramus fuciphagus inexpectatus, Allan Octavian Hume, 1873

    Range: Andaman and Nicobar Islands, vagrant to Burma

  • Aerodramus fuciphagus micans, Erwin Stresemann, 1914

    Range: Eastern Lesser Sundas (Sumba, Savu and Timor)

  • Aerodramus fuciphagus perplexus, Joseph Harvey Riley, 1927

    Range: Maratua Archipelago off eastern Borneo

  • Aerodramus fuciphagus vestitus, RenĂ©-Primevère Lesson, 1843

    Range: Sumatra and Borneo, sometimes considered to be a separate species, the brown-rumped swiftlet, Aerodramus vestitus (Lesson, 1843)


  • Collocalia fuciphaga

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)

Range map of Aerodramus fuciphagus in Thailand

Important note; our range maps are based on limited data we have collected. The data is not necessarily accurate or complete.

Special thanks to Ton Smits, Parinya Pawangkhanant, Ian Dugdale and many others for their contribution for range data.

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