Great Dusky Swift vs White-throated Needletail
Cypseloides senex comparado con Hirundapus caudacutus
Side-by-Side Comparison
| Atributo | Great Dusky Swift | White-throated Needletail |
|---|---|---|
| Nombre científico | Cypseloides senex | Hirundapus caudacutus |
| Orden | Caprimulgiformes | Caprimulgiformes |
| Familia | Apodidae | Apodidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 33,8 cm (13.3 in) | 41,2 cm (16.2 in) |
| Peso | 83,0 g (2.93 oz) | 101,475 g (3.58 oz) |
| Dieta | Feeds on aerial plankton of tiny insects and spiders; entire diet captured during non-stop aerial … | High-speed aerial insectivore catching small flying insects and aerial spiders during fast sustained flight. |
| Tamaño de la puesta | 1-2 | 2-7 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Great Dusky Swift only
Ninguno
White-throated Needletail only
Song & Call Comparison
Great Dusky Swift
Loud, churring trill; harsher and louder than other Cypseloides; calls over Iguacu Falls and major Neotropical waterfalls; buzzy 'bzzzt-bzzzt' in aerial groups
White-throated Needletail
Powerful, loud churring rattle descending in pitch; deep resonant trill audible from great distance, forceful and sustained.
Geographic Range & Migration
Great Dusky Swift
Found in eastern South America from Venezuela and the Guianas south to Bolivia and Paraguay. Resident near rocky cliffs and waterfalls.
White-throated Needletail
Breeds in Siberia, China, Japan, and the Himalayas. Long-distance migrant wintering in Australasia and Southeast Asia. Breeds in forests and cliffs.
Estado de conservación
Great Dusky Swift
White-throated Needletail
How to Tell Them Apart
Great Dusky Swift
Very large; entirely dark sooty-brown with pale grey forehead and chin scaling; slightly paler underparts; broad wings; largest Cypseloides swift; South American waterfall specialist with dusky uniform plumage and imposing …
White-throated Needletail
Large; dark blackish-brown upperparts with metallic green gloss; white throat and undertail coverts; pale white back saddle between wings; short spiny tail; one of the world's fastest birds; white throat …
About These Birds
Great Dusky Swift
A large swift (18-20 cm) of southeastern Brazil, eastern Paraguay, and northeastern Argentina. Dark sooty-brown plumage. Aerial insectivore, foraging over forested gorges and waterfalls. Nests in large colonies behind waterfalls. The largest member of the genus Cypseloides.
White-throated Needletail
El vencejo de aguja mayor es un vencejo grande de Asia oriental y el sur de Asia. Tiene alas largas y estrechas, una garganta blanca y una colorida mancha en la rabadilla. Uno de los pájaros más rápidos del mundo en vuelo. Pasa la mayor parte de su vida en vuelo, alimentándose de insectos. Migra entre los sitios de cría del este asiático y los de invernada en Australia.