Southern Swift vs Black Spinetail
Chaetura meridionalis 比較対象 Telacanthura melanopygia
Side-by-Side Comparison
| 属性 | Southern Swift | Black Spinetail |
|---|---|---|
| 学名 | Chaetura meridionalis | Telacanthura melanopygia |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 26.3 cm (10.4 in) | 32.4 cm (12.8 in) |
| 体重 | 19.8 g (0.70 oz) | 52.0 g (1.83 oz) |
| 食性 | Completely aerial diet of small flying insects and spiders; never forages on the ground or … | High-speed aerial insectivore catching small flying insects and aerial spiders during fast sustained flight. |
| 一腹卵数 | 3-5 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Southern Swift
Faint, thin squealing trill; rapid metallic chips cascading high-pitched over coastal forest, almost ventriloquial in quality.
Black Spinetail
Deep, resonant chattering with gravelly undertones; series of rough churring notes interspersed with sharp screaming calls.
Geographic Range & Migration
Southern Swift
Found in southern South America from Brazil to Argentina. Migratory, moving north to Amazonia during the austral winter. Open areas and forest.
Black Spinetail
Found in West and Central Africa from Nigeria and Cameroon east to Uganda. Resident in lowland rainforest and forest edge.
保全状況
Southern Swift
Black Spinetail
How to Tell Them Apart
Southern Swift
Small; dark sooty-brown overall; pale grey rump band moderately contrasting with dark back; underparts dark grey-brown; short spiny tail; southern South American migratory species; closely resembles Ashy-tailed Swift but 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
Southern Swift
ブラジルからアルゼンチンの南アメリカ南東部に生息する小型アマツバメ（11〜12 cm）。暗い灰褐色の羽衣。棘状の尾。空中昆虫食性。南部で繁殖し北部へ移動する長距離渡り鳥。
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.