Cassin's Spinetail vs White-collared Swift
Neafrapus cassini 비교 대상 Streptoprocne zonaris
Side-by-Side Comparison
| 속성 | Cassin's Spinetail | White-collared Swift |
|---|---|---|
| 학명 | Neafrapus cassini | Streptoprocne zonaris |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 31.2 cm (12.3 in) | 42.5 cm (16.7 in) |
| 체중 | 39.5 g (1.39 oz) | 106.45 g (3.75 oz) |
| 식성 | Catches aerial plankton of small insects and spiders in fast sweeping flight; roosts in rock … | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| 산란 수 | -- | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Cassin's Spinetail
Loud, penetrating screech followed by descending chatter; harsh staccato calls echoing through African forest understory.
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
Cassin's Spinetail
Found in Central and East Africa from Cameroon east to Kenya and Tanzania. Resident in lowland rainforest and gallery 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.
보전 상태
Cassin's Spinetail
White-collared Swift
How to Tell Them Apart
Cassin's Spinetail
Medium-large; dark blackish-brown upperparts; white rump patch; pale whitish underparts; very short stubby spinetail; Central African forest species; short rounded tail with spiny tips distinctive; larger and broader-winged than smaller …
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
Cassin's Spinetail
A medium-sized swift (13-14 cm) of lowland tropical forests from Sierra Leone to Uganda. Dark plumage with a white belly patch. Spine-tipped tail feathers. Aerial insectivore, foraging in rapid, bat-like flight over the forest canopy. Colonial nester in hollow trees.
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.