White-rumped Swiftlet vs Chestnut-collared Swift
Aerodramus spodiopygius 对比 Streptoprocne rutila
Side-by-Side Comparison
| 属性 | White-rumped Swiftlet | Chestnut-collared Swift |
|---|---|---|
| 学名 | Aerodramus spodiopygius | Streptoprocne rutila |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 23.4 cm (9.2 in) | 26.0 cm (10.2 in) |
| 体重 | 7.4 g (0.26 oz) | 21.8 g (0.77 oz) |
| 食性 | 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 … |
| 产卵数 | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
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.
保护状况
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
一种小型金丝燕（体长10-11厘米），广泛分布于从俾斯麦群岛至斐济的西太平洋地区。属雨燕科（Apodidae），是太平洋金丝燕中分布最广者之一。
Chestnut-collared Swift
栗领雨燕栖息于中美洲和南美洲北部的山地。