Drab Swiftlet vs White-collared Swift
Collocalia neglecta so với Streptoprocne zonaris
Side-by-Side Comparison
| Thuộc Tính | Drab Swiftlet | White-collared Swift |
|---|---|---|
| Tên Khoa Học | Collocalia neglecta | Streptoprocne zonaris |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Apodidae | Apodidae |
| Tình Trạng Bảo Tồn | Not Evaluated | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | — | 42,5 cm (16.7 in) |
| Khối Lượng | 5,9 g (0.21 oz) | 106,45 g (3.75 oz) |
| Chế Độ Ăn | Entirely airborne insectivore; feeds on minute flying insects and web-dispersing spiders over open habitats. | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| Số Trứng | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Drab Swiftlet
High, thin twittering; 'tsit-tsit' in flight; echolocation clicks inside cave roosts; small size and unremarkable plumage matched by simple, thin high-pitched calls
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
Drab Swiftlet
Found on the Andaman and Nicobar Islands and Simeuluë Island off Sumatra. Resident in coastal and lowland habitats. Sedentary.
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
Drab Swiftlet
White-collared Swift
How to Tell Them Apart
Drab Swiftlet
Tiny; dull brownish-grey upperparts with little or no gloss; whitish-buff rump band; pale greyish-buff underparts; forked tail; as the name implies, lacks the iridescent gloss of most Collocalia swiftlets; island …
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
Drab Swiftlet
A small swiftlet (10 cm) found in the Philippines, Sulawesi, and the Moluccas. Dark grey-brown plumage, less glossy than related species. Aerial insectivore. Colonial cave nester. Taxonomy has been revised repeatedly; sometimes merged with other swiftlet taxa.
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.