Cape Verde Swift vs White-collared Swift
Apus alexandri comparado com Streptoprocne zonaris
Side-by-Side Comparison
| Atributo | Cape Verde Swift | White-collared Swift |
|---|---|---|
| Nome científico | Apus alexandri | Streptoprocne zonaris |
| Ordem | Caprimulgiformes | Caprimulgiformes |
| Família | Apodidae | Apodidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 27,5 cm (10.8 in) | 42,5 cm (16.7 in) |
| Peso | 39,4 g (1.39 oz) | 106,45 g (3.75 oz) |
| Dieta | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| Tamanho da postura | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Cape Verde Swift
Soft, musical whistling with smooth melodic quality; clear, unhurried phrases rising and falling gently in warm afternoon air.
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
Cape Verde Swift
Endemic to the Cape Verde Islands in the eastern Atlantic. Resident on several islands including São Vicente and Santo Antão.
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.
Estado de conservação
Cape Verde Swift
White-collared Swift
How to Tell Them Apart
Cape Verde Swift
Dark sooty-brown overall; pale grey-white throat patch; underparts slightly paler brown; moderately forked tail; Cape Verde Islands endemic; similar to Common Swift but slightly smaller with more extensive pale throat …
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
Cape Verde Swift
A medium-sized swift (13-14 cm) endemic to the Cape Verde Islands in the eastern Atlantic. Dark plumage with a pale throat. Aerial insectivore, foraging over volcanic landscapes and towns. Resident population restricted to the archipelago. Closely related to Common Swift.
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.