Cave Swiftlet vs White-collared Swift
Collocalia linchi so với Streptoprocne zonaris
Side-by-Side Comparison
| Thuộc Tính | Cave Swiftlet | White-collared Swift |
|---|---|---|
| Tên Khoa Học | Collocalia linchi | Streptoprocne zonaris |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Apodidae | Apodidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 18,7 cm (7.4 in) | 42,5 cm (16.7 in) |
| Khối Lượng | 6,05 g (0.21 oz) | 106,45 g (3.75 oz) |
| Chế Độ Ăn | Entirely aerial diet of tiny insects and spiders; forages in large flocks over open country … | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| Số Trứng | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Cave Swiftlet
Soft, rapid twittering; thin 'tsit-tsit' over Javan forests; audible echolocation clicks inside caves; colonial; produces squeaky chattering at roost sites; calls weakly in flight
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
Cave Swiftlet
Found in Sumatra, Java, Bali, and surrounding Indonesian islands. Resident in forest, cultivated land, and villages. Nests in rock crevices.
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
Cave Swiftlet
White-collared Swift
How to Tell Them Apart
Cave Swiftlet
Tiny; dark blue-black upperparts with faint gloss; pale greyish rump band; underparts whitish with grey-buff flanks; moderately forked tail; widespread in caves across Sundaland; less glossy and less white below …
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
Cave Swiftlet
A very small swiftlet (9 cm) found in Java, Bali, Sumatra, and the Lesser Sundas. Dark glossy plumage with a pale rump band. Aerial insectivore, foraging in flocks. One of the primary nest-producing swiftlets; its edible nests (made of saliva) are commercially harvested.
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.