Ridgetop Swiftlet vs Chestnut-collared Swift
Collocalia isonota 对比 Streptoprocne rutila
Side-by-Side Comparison
| 属性 | Ridgetop Swiftlet | Chestnut-collared Swift |
|---|---|---|
| 学名 | Collocalia isonota | Streptoprocne rutila |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Not Evaluated | Least Concern |
| 体长 | — | — |
| 翼展 | — | 26.0 cm (10.2 in) |
| 体重 | 6.483333333333333 g (0.23 oz) | 21.8 g (0.77 oz) |
| 食性 | Obligate aerial feeder on microscopic flying insects and spiders; highly social forager over tropical forest. | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … |
| 产卵数 | -- | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Ridgetop Swiftlet
Thin, high twittering; soft 'chip-chip' over Solomon Islands ridges; echolocation clicks in caves; one of smallest swiftlets; calls barely audible; rapid chittering in flight
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
Ridgetop Swiftlet
Endemic to the Solomon Islands. Found on Bougainville, Guadalcanal, and other major islands in lowland rainforest.
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
Ridgetop Swiftlet
Chestnut-collared Swift
How to Tell Them Apart
Ridgetop Swiftlet
Tiny swiftlet; glossy dark blue-green upperparts; pale buff rump band; dark sooty-brown underparts; slightly forked tail; recently described Philippine endemic; differs from congeners primarily in voice and ridge-top ridge habitat.
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
Ridgetop Swiftlet
山脊金丝燕(Collocalia isonota)是一种体长9-10厘米的小型金丝燕，分布于菲律宾和小巽他群岛的山地地区。深色有光泽羽毛。空中捕食昆虫，在山地地形中筑巢。
Chestnut-collared Swift
栗领雨燕栖息于中美洲和南美洲北部的山地。