Black-nest Swiftlet vs White-collared Swift
Aerodramus maximus so với Streptoprocne zonaris
Side-by-Side Comparison
| Thuộc Tính | Black-nest Swiftlet | White-collared Swift |
|---|---|---|
| Tên Khoa Học | Aerodramus maximus | Streptoprocne zonaris |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Apodidae | Apodidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 25,8 cm (10.2 in) | 42,5 cm (16.7 in) |
| Khối Lượng | 16,8 g (0.59 oz) | 106,45 g (3.75 oz) |
| Chế Độ Ăn | Aerial plankton feeder taking tiny midges, fungus gnats, and ballooning spiders in rapid coursing flights. | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| Số Trứng | 1 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Black-nest Swiftlet
Rapid twittering; thin 'tsit-tsit' over Southeast Asian forest; audible echolocation clicks in caves; larger than many swiftlets; slightly louder calls; colonial nester with dark nest
White-collared Swift
Loud, screaming 'shreee-shreee'; powerful screeching trill; calls from large flocks over mountains; very audible; one of the loudest Neotropical swifts; alarm a harsh rattle
Geographic Range & Migration
Black-nest Swiftlet
Found from the Nicobar Islands through the Thai-Malay Peninsula, Borneo, and the Philippines. Famous for edible nests made of pure saliva.
White-collared Swift
Found from Mexico south through Central America to South America east of the Andes, reaching Bolivia and southern Brazil. Often in large flocks.
Tình Trạng Bảo Tồn
Black-nest Swiftlet
White-collared Swift
How to Tell Them Apart
Black-nest Swiftlet
Medium-small; dark sooty-brown upperparts with rump slightly paler grey-brown; underparts dark sooty-grey; forked tail; one of the largest Aerodramus swiftlets; named for its distinctive all-black saliva nest rather than visible …
White-collared Swift
Large; glossy blue-black plumage with bold broad white collar encircling entire neck; collar clean and complete; underparts black; large slightly forked tail; among the most recognisable Neotropical swifts due to …
About These Birds
Black-nest Swiftlet
A medium-sized swiftlet (13-14 cm) found from the Malay Peninsula through Indonesia to the Philippines. Dark plumage. Aerial insectivore. Colonial cave nester, building nests primarily of dark feathers cemented with saliva on cave walls. Commercially harvested for bird's nest soup.
White-collared Swift
A very large swift (20-22 cm, wingspan 45-55 cm) with a bold white collar band, the largest New World swift. Found from Mexico to southern Brazil and the Caribbean. Aerial insectivore, foraging in large, noisy flocks over forests and cities. Nests behind waterfalls and in caves.