Brown-backed Needletail vs Alpine Swift
Hirundapus giganteus comparado con Tachymarptis melba
Side-by-Side Comparison
| Atributo | Brown-backed Needletail | Alpine Swift |
|---|---|---|
| Nombre científico | Hirundapus giganteus | Tachymarptis melba |
| Orden | Caprimulgiformes | Caprimulgiformes |
| Familia | Apodidae | Apodidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 40,6 cm (16.0 in) | 43,9 cm (17.3 in) |
| Peso | 145,0 g (5.11 oz) | 97,5 g (3.44 oz) |
| Dieta | Aerial insectivore feeding on tiny flies, beetles, and ballooning spiders in rapid powerful aerial pursuit. | Aerial insectivore taking small flying insects and spiders; may forage at great heights following thermal … |
| Tamaño de la puesta | 3-5 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Brown-backed Needletail
Rough, buzzy chatter with intermittent higher squeaks; coarse twittering delivered continuously throughout aerial foraging.
Alpine Swift
Rapid series of short, clipped whistles; bright, clean notes delivered in quick succession with occasional doubled phrase.
Geographic Range & Migration
Brown-backed Needletail
Found from India and Sri Lanka through Southeast Asia to Borneo and the Philippines. Resident in lowland and hill forest, soaring over ridges.
Alpine Swift
Breeds from southern Europe and North Africa east through Central Asia and the Himalayas to India. Migratory; winters in sub-Saharan Africa.
Estado de conservación
Brown-backed Needletail
Alpine Swift
How to Tell Them Apart
Brown-backed Needletail
Very large; dark brown upperparts with bronze gloss; no pale back saddle unlike congeners; white throat patch; white undertail coverts; short spiny tail; largest Hirundapus; brown rather than black overall …
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
Brown-backed Needletail
El vencejo de aguja marrón es el vencejo más grande del mundo, con una envergadura de hasta 58 cm. Habita en el sur y sudeste de Asia, desde India hasta las islas del Pacífico. Tiene alas largas y estrechas, una garganta marrón oscura y una mancha en la rabadilla. Captura insectos y arañas al vuelo. Anida en grietas de acantilados. A menudo se observa en grandes altitudes, especialmente sobre las montañas.
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.