White-rumped Swiftlet vs Black Spinetail
Aerodramus spodiopygius comparé à Telacanthura melanopygia
Side-by-Side Comparison
| Attribut | White-rumped Swiftlet | Black Spinetail |
|---|---|---|
| Nom scientifique | Aerodramus spodiopygius | Telacanthura melanopygia |
| Ordre | Caprimulgiformes | Caprimulgiformes |
| Famille | Apodidae | Apodidae |
| Statut de conservation | Least Concern | Least Concern |
| Longueur | — | — |
| Envergure | 23,4 cm (9.2 in) | 32,4 cm (12.8 in) |
| Poids | 7,4 g (0.26 oz) | 52,0 g (1.83 oz) |
| Régime alimentaire | Feeds on aerial plankton including tiny flies and spiders; forages in large noisy flocks above … | High-speed aerial insectivore catching small flying insects and aerial spiders during fast sustained flight. |
| Taille de la couvée | 1-2 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-rumped Swiftlet
Rapid thin twittering; high 'tsit-tsit' notes over Pacific islands; echolocation clicks in caves; colonial; produces soft chattering in roost cavities; unremarkable call
Black Spinetail
Deep, resonant chattering with gravelly undertones; series of rough churring notes interspersed with sharp screaming calls.
Geographic Range & Migration
White-rumped Swiftlet
Found across the southwestern Pacific including Fiji, Samoa, Tonga, and Vanuatu east to the Cook Islands. Resident from coast to mountains.
Black Spinetail
Found in West and Central Africa from Nigeria and Cameroon east to Uganda. Resident in lowland rainforest and forest edge.
Statut de conservation
White-rumped Swiftlet
Black Spinetail
How to Tell Them Apart
White-rumped Swiftlet
Small; dark brownish-black upperparts with faint gloss; white rump patch contrasting sharply with dark back and tail; underparts pale greyish-white; forked tail; widespread Pacific species with diagnostically bright white rump.
Black Spinetail
Large; entirely black plumage with slight gloss; black rump unlike white-rumped congeners; underparts dark; spiny tail; West African forest species; all-black coloration with no contrasting markings distinguishes it from all …
About These Birds
White-rumped Swiftlet
A small swiftlet (10-11 cm) widespread across the western Pacific from the Bismarck Archipelago to Fiji and Samoa. Dark plumage with a conspicuous white rump band. Aerial insectivore. Colonial cave nester using echolocation. One of the most widespread Pacific swiftlets.
Black Spinetail
A medium-sized spinetail swift (14-15 cm) of lowland rainforests in West and Central Africa. All-dark plumage. Spine-tipped tail for bracing against tree trunks. Aerial insectivore, foraging above the forest canopy. Nests inside hollow trees. Uncommon and seldom observed.