Pygmy Palm Swift vs Alpine Swift
Tachornis furcata 비교 대상 Tachymarptis melba
Side-by-Side Comparison
| 속성 | Pygmy Palm Swift | Alpine Swift |
|---|---|---|
| 학명 | Tachornis furcata | Tachymarptis melba |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 17.8 cm (7.0 in) | 43.9 cm (17.3 in) |
| 체중 | 6.75 g (0.24 oz) | 97.5 g (3.44 oz) |
| 식성 | Aerial-only diet of small flying insects, winged termites, and drifting spiders caught during continuous flight. | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| 산란 수 | -- | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Pygmy Palm Swift
Tiny, buzzy chips barely audible beyond two metres; minute high-pitched twittering almost disappearing in ambient sound.
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
Geographic Range & Migration
Pygmy Palm Swift
Found in Venezuela and adjacent Colombia and Guyana. Resident in lowland savanna near Moriche palms; nests inside palm fronds. Uncommon.
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
Pygmy Palm Swift
Alpine Swift
How to Tell Them Apart
Pygmy Palm Swift
Tiny, among the world's smallest swifts; dark brown-black overall; pale buff-white rump patch; underparts pale whitish with dark sides; deeply forked tail; Venezuelan and Colombian palm-nesting species; minute size and …
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
Pygmy Palm Swift
A tiny swift (9-10 cm) of open savannas and palm groves in Colombia and Venezuela. Dark plumage with a pale rump. Long, forked tail. Aerial insectivore associated with Moriche palms (Mauritia flexuosa), nesting inside palm fronds. One of the smallest swifts.
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.