Black Swift vs Alpine Swift
Cypseloides niger 비교 대상 Tachymarptis melba
Side-by-Side Comparison
| 속성 | Black Swift | Alpine Swift |
|---|---|---|
| 학명 | Cypseloides niger | Tachymarptis melba |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Vulnerable | Least Concern |
| 체장 | — | — |
| 날개 폭 | 29.9 cm (11.8 in) | 43.9 cm (17.3 in) |
| 체중 | 41.55 g (1.47 oz) | 97.5 g (3.44 oz) |
| 식성 | Exclusively aerial diet; consumes tiny flying insects and spiders, sometimes following insect swarms for km. | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| 산란 수 | 1 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Black Swift
Soft, buzzy chittering 'spee-spee'; thin twittering over mountain waterfalls; higher and softer than Common Swift; small flocks call weakly over nesting cliffs
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
Geographic Range & Migration
Black Swift
Breeds in western North America from Alaska south to California and the Caribbean. Migrates to winter in Mexico and Central America.
Alpine Swift
Breeds from southern Europe and North Africa east through Central Asia and the Himalayas to India. Migratory; winters in sub-Saharan Africa.
보전 상태
Black Swift
Alpine Swift
How to Tell Them Apart
Black Swift
Entirely black with slight glossy sheen; faint pale scaling on forehead and chin in fresh plumage; broad-winged and large-bodied; slightly forked tail; sexes alike; North American cliff-nesting swift with wholly …
Alpine Swift
Large; dark brown upperparts; white throat patch separated from white belly by dark brown breast band; brown flanks; bold tricoloured underpart pattern; one of Europe's largest swifts with distinctive white …
About These Birds
Black Swift
15–18 cm(날개 길이 38 cm)의 대형 칼새로 전체 어두운 깃털과 약간 갈라진 꼬리를 가진다. 서부 북아메리카와 카리브 해의 해안 절벽과 폭포 뒤에서 번식한다. 산과 계곡 위 높은 곳에서 채이며 먹이를 구하는 공중 곤충식성. 남아메리카에서 월동하는 장거리 이동철새.
Alpine Swift
A large swift (20-22 cm, wingspan 54-60 cm) with a white belly and throat contrasting with dark brown upperparts. Found from southern Europe and Africa to Central Asia. Aerial insectivore, foraging at great heights. Nests on cliff faces in large colonies. Powerful, fast flier.