Whitehead's Swiftlet vs Black Spinetail
Aerodramus whiteheadi so với Telacanthura melanopygia
Side-by-Side Comparison
| Thuộc Tính | Whitehead's Swiftlet | Black Spinetail |
|---|---|---|
| Tên Khoa Học | Aerodramus whiteheadi | Telacanthura melanopygia |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Apodidae | Apodidae |
| Tình Trạng Bảo Tồn | Data Deficient | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 27,2 cm (10.7 in) | 32,4 cm (12.8 in) |
| Khối Lượng | 14,0 g (0.49 oz) | 52,0 g (1.83 oz) |
| Chế Độ Ăn | Aerial plankton feeder taking tiny midges, fungus gnats, and ballooning spiders in rapid coursing flights. | High-speed aerial insectivore catching small flying insects and aerial spiders during fast sustained flight. |
| Số Trứng | -- | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Whitehead's Swiftlet
Thin twittering; 'chip-chip' calls over Borneo highlands; echolocation clicks in cave roosts; data deficient; calls poorly documented from remote Bornean montane habitat
Black Spinetail
Deep, resonant chattering with gravelly undertones; series of rough churring notes interspersed with sharp screaming calls.
Geographic Range & Migration
Whitehead's Swiftlet
Endemic to the highlands of Borneo at 800–3,000 m. Resident in montane forest on Mount Kinabalu and the Crocker Range.
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
Whitehead's Swiftlet
Black Spinetail
How to Tell Them Apart
Whitehead's Swiftlet
Small; dark brownish-grey upperparts; pale buff-grey rump band; underparts pale grey-white; forked tail; Philippine endemic from Luzon; data-deficient species differing from Philippine Swiftlet mainly in habitat preference and island range.
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
Whitehead's Swiftlet
A small swiftlet (11-12 cm) endemic to the mountains of northern Luzon, Philippines. Dark plumage with a pale rump. Aerial insectivore of montane forest canopy above 1,000 m. Colonial cave nester using echolocation. Named after John Whitehead. Poorly known.
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.