Forbes-Watson's Swift vs White-collared Swift
Apus berliozi 对比 Streptoprocne zonaris
Side-by-Side Comparison
| 属性 | Forbes-Watson's Swift | White-collared Swift |
|---|---|---|
| 学名 | Apus berliozi | Streptoprocne zonaris |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 34.0 cm (13.4 in) | 42.5 cm (16.7 in) |
| 体重 | 43.166666666666664 g (1.52 oz) | 106.45 g (3.75 oz) |
| 食性 | Obligate aerial feeder on small insects and arachnids; catches prey in a wide gape during … | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| 产卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Forbes-Watson's Swift
Rapid, buzzy chatter descending at end; rough staccato notes spilling quickly with emphatic final chip before silence.
White-collared Swift
Loud, screaming 'shreee-shreee'; powerful screeching trill; calls from large flocks over mountains; very audible; one of the loudest Neotropical swifts; alarm a harsh rattle
Geographic Range & Migration
Forbes-Watson's Swift
Breeds in the Arabian Peninsula and East Africa from Somalia south to Tanzania. Partially migratory; range and taxonomy incompletely understood.
White-collared Swift
Found from Mexico south through Central America to South America east of the Andes, reaching Bolivia and southern Brazil. Often in large flocks.
保护状况
Forbes-Watson's Swift
White-collared Swift
How to Tell Them Apart
Forbes-Watson's Swift
Dark sooty-brown overall with pale buff throat patch; underparts slightly paler brown; Socotra Island and East African coast species; plumage similar to African Swift but slightly paler throat and restricted …
White-collared Swift
Large; glossy blue-black plumage with bold broad white collar encircling entire neck; collar clean and complete; underparts black; large slightly forked tail; among the most recognisable Neotropical swifts due to …
About These Birds
Forbes-Watson's Swift
贝利约兹雨燕栖息于索马里周边的东非地区，是相对罕见的雨燕。
White-collared Swift
白领雨燕广泛分布于拉丁美洲山地，以白色颈环为特征的大型雨燕。