Slender-tailed Nightjar vs Lesser Nighthawk
Caprimulgus clarus so với Chordeiles acutipennis
Side-by-Side Comparison
| Thuộc Tính | Slender-tailed Nightjar | Lesser Nighthawk |
|---|---|---|
| Tên Khoa Học | Caprimulgus clarus | Chordeiles acutipennis |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Caprimulgidae | Caprimulgidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 29,6 cm (11.7 in) | 33,0 cm (13.0 in) |
| Khối Lượng | 43,0 g (1.52 oz) | 50,0 g (1.76 oz) |
| Chế Độ Ăn | Nocturnal aerial insectivore specialising in large moths and flying beetles, caught in slow erratic hunting … | Hawks small flying insects at dusk and dawn over North and South American arid scrub … |
| Số Trứng | 2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Không
Slender-tailed Nightjar only
Lesser Nighthawk only
Song & Call Comparison
Slender-tailed Nightjar
Rapid churring trill; 'trrr-trrr' at steady pace; calls from East African dry scrub at night; lighter than Long-tailed Nightjar; alarm a quiet 'chek'
Lesser Nighthawk
Loud purring trill; buzzy 'brrrrr' given in flight; lower and softer than Common Nighthawk; males display with booming wingbeats; calls at dusk over deserts
Geographic Range & Migration
Slender-tailed Nightjar
Found from Angola and the DRC south through Zambia and Zimbabwe to South Africa. Resident in woodland and savanna near rocky outcrops.
Lesser Nighthawk
Breeds in open arid scrub from southwestern USA south through Central America to western South America; winters in Mexico and northern South America.
Tình Trạng Bảo Tồn
Slender-tailed Nightjar
Lesser Nighthawk
How to Tell Them Apart
Slender-tailed Nightjar
Pale brown upperparts with black streaks and buff-white spotting; whitish supercilium; white throat patch; underparts buff barred brown; males have elongated but narrower tail feathers than Long-tailed Nightjar.
Lesser Nighthawk
Brown and buff mottled above; buff-white below with brown barring; white throat in male; white wing bar closer to wingtip than in Common Nighthawk; buff tail band. Female with buff …
About These Birds
Slender-tailed Nightjar
A slender nightjar (24-27 cm including elongated tail) of open grassland and woodland edges in eastern and southern Africa. Similar to Long-tailed Nightjar but with paler plumage and finer markings. Nocturnal insectivore. Resident or short-distance migrant.
Lesser Nighthawk
A small Caprimulgidae nighthawk (~50 g) of deserts, semi-arid scrub, and open woodland from the southwestern United States to Peru and Brazil. Brown-and-buff patterned; males have a white throat bar. Low, buoyant flight close to the ground at dusk. Hunts insects aerially. Migratory; Least Concern.