Mountain Swiftlet vs Chestnut-collared Swift
Aerodramus hirundinaceus 比較対象 Streptoprocne rutila
Side-by-Side Comparison
| 属性 | Mountain Swiftlet | Chestnut-collared Swift |
|---|---|---|
| 学名 | Aerodramus hirundinaceus | Streptoprocne rutila |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 23.0 cm (9.1 in) | 26.0 cm (10.2 in) |
| 体重 | 9.700000000000001 g (0.34 oz) | 21.8 g (0.77 oz) |
| 食性 | Entirely airborne insectivore; feeds on minute flying insects and web-dispersing spiders over open habitats. | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … |
| 一腹卵数 | 1 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Mountain Swiftlet
High, thin twittering; 'tsit-tsit' over New Guinea highlands; echolocation clicks used in cave roosts; calls weakly in flight; colonial; flock calls produce soft chittering
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
Mountain Swiftlet
Found in montane New Guinea at 1,200–3,900 m. Resident in montane rainforest, moss forest, and subalpine grassland. Common in highlands.
Chestnut-collared Swift
Found from Mexico and the Caribbean south through Central America and South America to Argentina. Resident in highlands near mountain cliffs.
保全状況
Mountain Swiftlet
Chestnut-collared Swift
How to Tell Them Apart
Mountain Swiftlet
Small; dark blackish-grey upperparts; pale grey rump band; underparts pale greyish-white; forked tail; New Guinea montane endemic; similar to White-rumped Swiftlet but greyer overall and restricted to high-altitude zones.
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
Mountain Swiftlet
マウンテンスウィフトレットはニューギニアとモルッカの山岳地帯に生息するアナツバメである。
Chestnut-collared Swift
チェストナットカラードスウィフトは中央アメリカと南アメリカ北部の山岳地帯に生息するアマツバメである。