Southern Swift vs Chestnut-collared Swift
Chaetura meridionalis so với Streptoprocne rutila
Side-by-Side Comparison
| Thuộc Tính | Southern Swift | Chestnut-collared Swift |
|---|---|---|
| Tên Khoa Học | Chaetura meridionalis | Streptoprocne rutila |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Apodidae | Apodidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 26,3 cm (10.4 in) | 26,0 cm (10.2 in) |
| Khối Lượng | 19,8 g (0.70 oz) | 21,8 g (0.77 oz) |
| Chế Độ Ăn | Completely aerial diet of small flying insects and spiders; never forages on the ground or … | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … |
| Số Trứng | 3-5 | 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.
Chestnut-collared Swift
High, screaming trill; rapid 'scree-scree' in flight; shrill and penetrating; calls over Neotropical mountains and canyon edges; alarm a rapid screeching chatter
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.
Chestnut-collared Swift
Found from Mexico and the Caribbean south through Central America and South America to Argentina. Resident in highlands near mountain cliffs.
Tình Trạng Bảo Tồn
Southern Swift
Chestnut-collared 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 …
Chestnut-collared Swift
Dark blackish-brown body with diagnostic rich chestnut collar encircling entire neck; collar bold and complete; underparts slightly paler brown; small swift with striking warm-toned neck band contrasting vividly with dark …
About These Birds
Southern Swift
A small swift (11-12 cm) found in southeastern South America from Brazil to Argentina. Dark grey-brown plumage. Spine-tipped tail. Aerial insectivore. A long-distance austral migrant, breeding in southern Brazil and migrating north to Amazonia in the austral winter.
Chestnut-collared Swift
A small swift (13-14 cm) found from Mexico through Central America and South America to Bolivia and Brazil. Dark plumage with a distinctive chestnut collar and throat. Aerial insectivore, often foraging in mixed-species swift flocks over forests and highlands.