Ridgetop Swiftlet vs White-collared Swift
Collocalia isonota в сравнении с Streptoprocne zonaris
Side-by-Side Comparison
| Характеристика | Ridgetop Swiftlet | White-collared Swift |
|---|---|---|
| Научное название | Collocalia isonota | Streptoprocne zonaris |
| Отряд | Caprimulgiformes | Caprimulgiformes |
| Семейство | Apodidae | Apodidae |
| Охранный статус | Not Evaluated | Least Concern |
| Длина | — | — |
| Размах крыльев | — | 42,5 cm (16.7 in) |
| Масса | 6,483333333333333 g (0.23 oz) | 106,45 g (3.75 oz) |
| Питание | -- | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| Размер кладки | -- | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Ridgetop Swiftlet
Thin, high twittering; soft 'chip-chip' over Solomon Islands ridges; echolocation clicks in caves; one of smallest swiftlets; calls barely audible; rapid chittering in flight
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
Ridgetop Swiftlet
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.
Охранный статус
Ridgetop Swiftlet
White-collared Swift
How to Tell Them Apart
Ridgetop Swiftlet
Tiny swiftlet; glossy dark blue-green upperparts; pale buff rump band; dark sooty-brown underparts; slightly forked tail; recently described Philippine endemic; differs from congeners primarily in voice and ridge-top ridge habitat.
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
Ridgetop Swiftlet
A small swiftlet (9-10 cm) found in montane regions of the Philippines and the Lesser Sundas. Dark glossy plumage. Aerial insectivore. Recently split from Glossy Swiftlet. A high-altitude specialist, often found above 1,000 m on mountain ridges.
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.