Volcano Swiftlet vs African Swift
Aerodramus vulcanorum 比較対象 Apus barbatus
Side-by-Side Comparison
| 属性 | Volcano Swiftlet | African Swift |
|---|---|---|
| 学名 | Aerodramus vulcanorum | Apus barbatus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 24.0 cm (9.4 in) | 34.2 cm (13.5 in) |
| 体重 | 14.4 g (0.51 oz) | 42.666666666666664 g (1.51 oz) |
| 食性 | Entirely aerial diet of tiny insects and spiders; forages in large flocks over open country … | Completely aerial diet of small flying insects and spiders; never forages on the ground or … |
| 一腹卵数 | 2 | 1-2 |
| Population Trend | — | — |
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
African Swift
Sharp, piercing screech followed by rapid chatter; intense series of notes escalating in speed and volume before fading.
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.
African Swift
Found across sub-Saharan Africa from Senegal east to Ethiopia and south to South Africa. One of Africa's most common swift species.
保全状況
Volcano Swiftlet
African 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 …
African Swift
Dark sooty-brown throughout; pale throat patch whitish-grey; underparts slightly paler; broadly similar to Common Swift but slightly larger and marginally paler below; widespread Sub-Saharan African species.
About These Birds
Volcano Swiftlet
ジャワアナツバメはジャワ島の火山地帯に生息し、溶岩洞窟に巣を作る固有のアナツバメである。
African Swift
アフリカクロアマツバメはサハラ以南のアフリカに広く分布し、岩壁や建物の隙間に巣を作る。