Rothschild's Swift vs White-collared Swift
Cypseloides rothschildi เปรียบเทียบกับ Streptoprocne zonaris
Side-by-Side Comparison
| คุณสมบัติ | Rothschild's Swift | White-collared Swift |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Cypseloides rothschildi | Streptoprocne zonaris |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Apodidae | Apodidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 30.6 cm (12.0 in) | 42.5 cm (16.7 in) |
| น้ำหนัก | 43.0 g (1.52 oz) | 106.45 g (3.75 oz) |
| อาหาร | Aerial insectivore feeding on swarms of small flies, winged ants, and tiny beetles during sustained … | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| จำนวนไข่ | -- | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Rothschild's Swift
Thin, buzzy twittering in flight; soft 'tsee-tsee' contact notes; calls over Andean waterfalls; quiet and unobtrusive vocally; high-pitched but weak; rarely heard
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
Rothschild's Swift
Found in the Andes of northwestern Argentina and adjacent Bolivia at 1,500–3,000 m. Very poorly known; nests near waterfalls in humid forest.
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
Rothschild's Swift
White-collared Swift
How to Tell Them Apart
Rothschild's Swift
Blackish-brown overall with subtle pale scaling on throat and forehead; underparts slightly paler brownish; no contrasting white markings; robust-bodied Andean swift distinguished from Sooty Swift by faint pale throat scaling.
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
Rothschild's Swift
A medium-sized swift (15-16 cm) found in montane forests of northwestern Argentina and southern Bolivia at 1,000-3,000 m elevation. Dark sooty plumage. Aerial insectivore, foraging over forested valleys. Nests behind waterfalls. Uncommon and local; named after Walter Rothschild.
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.