Mariana Swiftlet vs African Swift
Aerodramus bartschi 비교 대상 Apus barbatus
Side-by-Side Comparison
| 속성 | Mariana Swiftlet | African Swift |
|---|---|---|
| 학명 | Aerodramus bartschi | Apus barbatus |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Vulnerable | Least Concern |
| 체장 | — | — |
| 날개 폭 | 17.7 cm (7.0 in) | 34.2 cm (13.5 in) |
| 체중 | 7.25 g (0.26 oz) | 42.666666666666664 g (1.51 oz) |
| 식성 | Entirely airborne insectivore; feeds on minute flying insects and web-dispersing spiders over open habitats. | Completely aerial diet of small flying insects and spiders; never forages on the ground or … |
| 산란 수 | 1 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Mariana Swiftlet
Very high, thin twittering; tiny and high-pitched; 'tsit-tsit' over Guam and Saipan; audible echolocation clicks in cave roosts; endangered; vocal mainly near nesting caves
African Swift
Sharp, piercing screech followed by rapid chatter; intense series of notes escalating in speed and volume before fading.
Geographic Range & Migration
Mariana Swiftlet
Endemic to the Mariana Islands (Guam, Saipan, and adjacent islands). Resident in forested areas; nests in limestone caves. Endangered on Guam.
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.
보전 상태
Mariana Swiftlet
African Swift
How to Tell Them Apart
Mariana Swiftlet
Tiny; dark brownish-black upperparts; pale grey-buff rump band; underparts pale whitish-grey; forked tail; Mariana Islands endemic and vulnerable; very small for the genus with concolorous brownish tone and subdued rump …
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
Mariana Swiftlet
서태평양 마리아나 제도(괌, 사이판, 로타)에 고유하게 서식하는 작은 칼새류(10~11cm). 어두운 깃털에 연한 허리 반점이 있다. 공중 식충성이다.
African Swift
아프리카 칼새는 사하라 이남 아프리카 전역에 분포하는 중간 크기의 칼새입니다. 검은 깃털과 흰 목이 특징이며, 절벽과 건물에서 집을 짓고 높은 곳에서 날아오르며 먹이를 잡습니다.