Forbes-Watson's Swift vs White-collared Swift
Apus berliozi เปรียบเทียบกับ Streptoprocne zonaris
Side-by-Side Comparison
| คุณสมบัติ | Forbes-Watson's Swift | White-collared Swift |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Apus berliozi | Streptoprocne zonaris |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Apodidae | Apodidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 34.0 cm (13.4 in) | 42.5 cm (16.7 in) |
| น้ำหนัก | 43.166666666666664 g (1.52 oz) | 106.45 g (3.75 oz) |
| อาหาร | 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. |
| จำนวนไข่ | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
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Forbes-Watson's Swift only
White-collared Swift only
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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.
สถานะการอนุรักษ์
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
A medium-sized swift (16-17 cm) found in arid coastal regions from the Horn of Africa to the Arabian Peninsula and northwestern Indian Ocean islands. Pale brown plumage with a large white throat patch. Aerial insectivore. Named after the German zoologist Rudolf Berlioz.
White-collared Swift
A very large swift (20-22 cm, wingspan 45-55 cm) with a bold white collar band, the largest New World swift. Found from Mexico to southern Brazil and the Caribbean. Aerial insectivore, foraging in large, noisy flocks over forests and cities. Nests behind waterfalls and in caves.