Volcano Swiftlet vs Chestnut-collared Swift
Aerodramus vulcanorum 对比 Streptoprocne rutila
Side-by-Side Comparison
| 属性 | Volcano Swiftlet | Chestnut-collared Swift |
|---|---|---|
| 学名 | Aerodramus vulcanorum | Streptoprocne rutila |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 24.0 cm (9.4 in) | 26.0 cm (10.2 in) |
| 体重 | 14.4 g (0.51 oz) | 21.8 g (0.77 oz) |
| 食性 | Entirely aerial diet of tiny insects and spiders; forages in large flocks over open country … | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … |
| 产卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Volcano Swiftlet
High twittering calls; thin 'tsit' notes over Javan volcanic mountains; echolocation clicks in cave roosts; slightly larger than many swiftlets; calls produce soft chattering
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
Volcano Swiftlet
Endemic to the volcanoes of Java at 1,000–3,400 m. Resident in montane forest near active and dormant craters. Very restricted range.
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
Volcano Swiftlet
Chestnut-collared Swift
How to Tell Them Apart
Volcano Swiftlet
Small; dark sooty-brown upperparts; grey-brown rump barely paler than back; underparts dark grey-brown; forked tail; restricted to Java's volcanoes; notably lacks a distinct pale rump band contrasting with the dark …
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
Volcano Swiftlet
一种小型金丝燕（体长10-11厘米），特产于印度尼西亚爪哇、苏门答腊和巴厘岛的高山火山地区。属雨燕科（Apodidae），在火山洞穴中繁殖，是适应火山地貌的特有种。
Chestnut-collared Swift
栗领雨燕栖息于中美洲和南美洲北部的山地。