White-rumped Swiftlet vs Chestnut-collared Swift
Aerodramus spodiopygius เปรียบเทียบกับ Streptoprocne rutila
Side-by-Side Comparison
| คุณสมบัติ | White-rumped Swiftlet | Chestnut-collared Swift |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Aerodramus spodiopygius | Streptoprocne rutila |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Apodidae | Apodidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 23.4 cm (9.2 in) | 26.0 cm (10.2 in) |
| น้ำหนัก | 7.4 g (0.26 oz) | 21.8 g (0.77 oz) |
| อาหาร | Feeds on aerial plankton including tiny flies and spiders; forages in large noisy flocks above … | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … |
| จำนวนไข่ | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
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White-rumped Swiftlet only
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Chestnut-collared Swift only
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Song & Call Comparison
White-rumped Swiftlet
Rapid thin twittering; high 'tsit-tsit' notes over Pacific islands; echolocation clicks in caves; colonial; produces soft chattering in roost cavities; unremarkable call
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
White-rumped Swiftlet
Found across the southwestern Pacific including Fiji, Samoa, Tonga, and Vanuatu east to the Cook Islands. Resident from coast to mountains.
Chestnut-collared Swift
Found from Mexico and the Caribbean south through Central America and South America to Argentina. Resident in highlands near mountain cliffs.
สถานะการอนุรักษ์
White-rumped Swiftlet
Chestnut-collared Swift
How to Tell Them Apart
White-rumped Swiftlet
Small; dark brownish-black upperparts with faint gloss; white rump patch contrasting sharply with dark back and tail; underparts pale greyish-white; forked tail; widespread Pacific species with diagnostically bright white rump.
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
White-rumped Swiftlet
A small swiftlet (10-11 cm) widespread across the western Pacific from the Bismarck Archipelago to Fiji and Samoa. Dark plumage with a conspicuous white rump band. Aerial insectivore. Colonial cave nester using echolocation. One of the most widespread Pacific swiftlets.
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.