Western Glossy Swiftlet vs Chestnut-collared Swift
Collocalia affinis so với Streptoprocne rutila
Side-by-Side Comparison
| Thuộc Tính | Western Glossy Swiftlet | Chestnut-collared Swift |
|---|---|---|
| Tên Khoa Học | Collocalia affinis | Streptoprocne rutila |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Apodidae | Apodidae |
| Tình Trạng Bảo Tồn | Not Evaluated | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | — | 26,0 cm (10.2 in) |
| Khối Lượng | 8,65 g (0.31 oz) | 21,8 g (0.77 oz) |
| Chế Độ Ăn | Aerial insectivore consuming minute dipterans, midges, and ballooning spiders caught in continuous fast flight. | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … |
| Số Trứng | 1-3 | 2 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Western Glossy Swiftlet only
Không
Chestnut-collared Swift only
Không
Song & Call Comparison
Western Glossy Swiftlet
High, thin 'tsit-tsit'; rapid chittering in flight; echolocation clicks used inside caves; tiny size produces very high-pitched thin calls; soft twittering over forest
Chestnut-collared Swift
High, screaming trill; rapid 'scree-scree' in flight; shrill and penetrating; calls over Neotropical mountains and canyon edges; alarm a rapid screeching chatter
Geographic Range & Migration
Western Glossy Swiftlet
Found from the Andaman Islands and northeastern India through Southeast Asia to Borneo and the Philippines. Resident in diverse forest habitats.
Chestnut-collared Swift
Found from Mexico and the Caribbean south through Central America and South America to Argentina. Resident in highlands near mountain cliffs.
Tình Trạng Bảo Tồn
Western Glossy Swiftlet
Chestnut-collared Swift
How to Tell Them Apart
Western Glossy Swiftlet
Tiny; glossy blue-black upperparts with green iridescence; underparts dark sooty-grey; white-buff rump band; deeply forked tail; recently split taxon similar to Philippine Glossy Swiftlet but with subtly different rump and …
Chestnut-collared Swift
Dark blackish-brown body with diagnostic rich chestnut collar encircling entire neck; collar bold and complete; underparts slightly paler brown; small swift with striking warm-toned neck band contrasting vividly with dark …
About These Birds
Western Glossy Swiftlet
A small swiftlet (9-10 cm) found in lowland and hill forests of the Malay Peninsula, Sumatra, and Borneo. Glossy blue-black upperparts with a paler rump. Aerial insectivore, feeding on tiny flying insects. Colonial nester in caves and buildings.
Chestnut-collared Swift
A small swift (13-14 cm) found from Mexico through Central America and South America to Bolivia and Brazil. Dark plumage with a distinctive chestnut collar and throat. Aerial insectivore, often foraging in mixed-species swift flocks over forests and highlands.