Slender-tailed Nightjar vs Papuan Nightjar
Caprimulgus clarus so với Eurostopodus papuensis
Side-by-Side Comparison
| Thuộc Tính | Slender-tailed Nightjar | Papuan Nightjar |
|---|---|---|
| Tên Khoa Học | Caprimulgus clarus | Eurostopodus papuensis |
| 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) | 37,9 cm (14.9 in) |
| Khối Lượng | 43,0 g (1.52 oz) | 80,5 g (2.84 oz) |
| Chế Độ Ăn | Nocturnal aerial insectivore specialising in large moths and flying beetles, caught in slow erratic hunting … | Hawks large flying insects, especially moths, at night over Papuan forest and savanna. |
| Số Trứng | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
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'
Papuan Nightjar
Churring, repetitive nocturnal call; soft bubbling trill; melodic series of hollow notes; calls from low perch or ground in New Guinea lowland forest
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.
Papuan Nightjar
Resident of savanna woodland, grass, and scrub in lowland New Guinea (Papua, Indonesia and Papua New Guinea).
Tình Trạng Bảo Tồn
Slender-tailed Nightjar
Papuan Nightjar
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.
Papuan Nightjar
Dark grey-brown finely vermiculated with buff and black; pale buff and rufous throat patch; pale supercilium; no white wing patches; tail barred brown and buff; cryptically patterned bark-mimicking plumage.
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.
Papuan Nightjar
A small Caprimulgidae nightjar (~81 g) of lowland savanna, grassland, and forest edges across the southern lowlands of New Guinea. Cryptic buff-and-brown plumage; white-spotted wings visible in flight. Nocturnal aerial insectivore. Commonly heard at night but rarely seen by day. Least Concern.