Southern Swift vs Great Dusky Swift
Chaetura meridionalis comparado com Cypseloides senex
Side-by-Side Comparison
| Atributo | Southern Swift | Great Dusky Swift |
|---|---|---|
| Nome científico | Chaetura meridionalis | Cypseloides senex |
| Ordem | Caprimulgiformes | Caprimulgiformes |
| Família | Apodidae | Apodidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 26,3 cm (10.4 in) | 33,8 cm (13.3 in) |
| Peso | 19,8 g (0.70 oz) | 83,0 g (2.93 oz) |
| Dieta | Completely aerial diet of small flying insects and spiders; never forages on the ground or … | Feeds on aerial plankton of tiny insects and spiders; entire diet captured during non-stop aerial … |
| Tamanho da postura | 3-5 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Southern Swift
Faint, thin squealing trill; rapid metallic chips cascading high-pitched over coastal forest, almost ventriloquial in quality.
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
Geographic Range & Migration
Southern Swift
Found in southern South America from Brazil to Argentina. Migratory, moving north to Amazonia during the austral winter. Open areas and forest.
Great Dusky Swift
Found in eastern South America from Venezuela and the Guianas south to Bolivia and Paraguay. Resident near rocky cliffs and waterfalls.
Estado de conservação
Southern Swift
Great Dusky Swift
How to Tell Them Apart
Southern Swift
Small; dark sooty-brown overall; pale grey rump band moderately contrasting with dark back; underparts dark grey-brown; short spiny tail; southern South American migratory species; closely resembles Ashy-tailed Swift but rump …
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 …
About These Birds
Southern Swift
Andorinhão-do-temporal (Chaetura meridionalis), 13–14 cm. Um dos maiores andorinhões do gênero, com plumagem escura acima, uropígio contrastante mais pálido, partes inferiores acinzentadas. Migratório, habita campos abertos e bordas de floresta na América do Sul. Captura insetos em voo.
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.