Western Glossy Swiftlet vs Black Spinetail
Collocalia affinis so với Telacanthura melanopygia
Side-by-Side Comparison
| Thuộc Tính | Western Glossy Swiftlet | Black Spinetail |
|---|---|---|
| Tên Khoa Học | Collocalia affinis | Telacanthura melanopygia |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Apodidae | Apodidae |
| Tình Trạng Bảo Tồn | Not Evaluated | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | — | 32,4 cm (12.8 in) |
| Khối Lượng | 8,65 g (0.31 oz) | 52,0 g (1.83 oz) |
| Chế Độ Ăn | Aerial insectivore consuming minute dipterans, midges, and ballooning spiders caught in continuous fast flight. | High-speed aerial insectivore catching small flying insects and aerial spiders during fast sustained flight. |
| Số Trứng | 1-3 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Western Glossy Swiftlet
High, thin 'tsit-tsit'; rapid chittering in flight; echolocation clicks used inside caves; tiny size produces very high-pitched thin calls; soft twittering over forest
Black Spinetail
Deep, resonant chattering with gravelly undertones; series of rough churring notes interspersed with sharp screaming calls.
Geographic Range & Migration
Western Glossy Swiftlet
Found from the Andaman Islands and northeastern India through Southeast Asia to Borneo and the Philippines. Resident in diverse forest habitats.
Black Spinetail
Found in West and Central Africa from Nigeria and Cameroon east to Uganda. Resident in lowland rainforest and forest edge.
Tình Trạng Bảo Tồn
Western Glossy Swiftlet
Black Spinetail
How to Tell Them Apart
Western Glossy Swiftlet
Tiny; glossy blue-black upperparts with green iridescence; underparts dark sooty-grey; white-buff rump band; deeply forked tail; recently split taxon similar to Philippine Glossy Swiftlet but with subtly different rump and …
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
Western Glossy Swiftlet
A small swiftlet (9-10 cm) found in lowland and hill forests of the Malay Peninsula, Sumatra, and Borneo. Glossy blue-black upperparts with a paler rump. Aerial insectivore, feeding on tiny flying insects. Colonial nester in caves and buildings.
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.