Vaux's Swift vs Black Spinetail
Chaetura vauxi ile kıyaslandığında Telacanthura melanopygia
Side-by-Side Comparison
| Özellik | Vaux's Swift | Black Spinetail |
|---|---|---|
| Bilimsel Ad | Chaetura vauxi | Telacanthura melanopygia |
| Takım | Caprimulgiformes | Caprimulgiformes |
| Familya | Apodidae | Apodidae |
| Koruma Durumu | Least Concern | Least Concern |
| Uzunluk | — | — |
| Kanat Açıklığı | 22,3 cm (8.8 in) | 32,4 cm (12.8 in) |
| Ağırlık | 18,033333333333335 g (0.64 oz) | 52,0 g (1.83 oz) |
| Beslenme | Exclusively aerial insectivore catching small flying insects and spiders drifting in aerial plankton at altitude. | High-speed aerial insectivore catching small flying insects and aerial spiders during fast sustained flight. |
| Kuluçka Büyüklüğü | 1-7 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Vaux's Swift
Soft, high sibilant whisper followed by ticking notes; delicate trill barely audible beyond immediate roosting vicinity.
Black Spinetail
Deep, resonant chattering with gravelly undertones; series of rough churring notes interspersed with sharp screaming calls.
Geographic Range & Migration
Vaux's Swift
Breeds in western North America from Alaska south to Central America. Migrates to winter in Venezuela and northwestern South America.
Black Spinetail
Found in West and Central Africa from Nigeria and Cameroon east to Uganda. Resident in lowland rainforest and forest edge.
Koruma Durumu
Vaux's Swift
Black Spinetail
How to Tell Them Apart
Vaux's Swift
Small; dark sooty-brown upperparts; pale grey rump slightly paler than back; underparts pale greyish-brown; short spiny tail; smaller and paler-bellied than Chimney Swift; Pacific coast North American species with subtly …
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
Vaux's Swift
A small swift (11-12 cm) found in western North America from Alaska to Central America. Dark grey-brown plumage similar to Chimney Swift but smaller. Spine-tipped tail. Aerial insectivore, nesting in hollow trees and chimneys. Partial migrant wintering in Central America.
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.