Papuan Nightjar vs Rufous-bellied Nighthawk
Eurostopodus papuensis so với Lurocalis rufiventris
Side-by-Side Comparison
| Thuộc Tính | Papuan Nightjar | Rufous-bellied Nighthawk |
|---|---|---|
| Tên Khoa Học | Eurostopodus papuensis | Lurocalis rufiventris |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Caprimulgidae | Caprimulgidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 37,9 cm (14.9 in) | 40,6 cm (16.0 in) |
| Khối Lượng | 80,5 g (2.84 oz) | 104,5 g (3.69 oz) |
| Chế Độ Ăn | Hawks large flying insects, especially moths, at night over Papuan forest and savanna. | Catches large flying insects in nocturnal aerial pursuit over Andean forest and forest edge. |
| Số Trứng | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
Rufous-bellied Nighthawk
Deep, hollow 'wok-wok' series; resonant frog-like calls from Andean forest canopy; lower in pitch than Short-tailed Nighthawk; carries across mountain valleys
Geographic Range & Migration
Papuan Nightjar
Resident of savanna woodland, grass, and scrub in lowland New Guinea (Papua, Indonesia and Papua New Guinea).
Rufous-bellied Nighthawk
Resident of Andean foothills and montane forest edge from Colombia and Venezuela south through Ecuador and Peru to Bolivia, at 500–2,000 m.
Tình Trạng Bảo Tồn
Papuan Nightjar
Rufous-bellied Nighthawk
How to Tell Them Apart
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.
Rufous-bellied Nighthawk
Dark sooty-brown above with buff and chestnut spotting; distinctive rufous-orange belly contrasting with dark breast; no white wing bar; short rounded tail; rufous tone on underparts unique among nighthawks.
About These Birds
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.
Rufous-bellied Nighthawk
A medium Caprimulgidae nighthawk (~105 g) of montane forest edges and humid foothill zones from Colombia to Bolivia. Rufous underparts contrast with dark upperparts; a white throat patch is visible. Hawk-like flight above the forest at dusk and dawn. Seldom recorded; biology little known. Least Concern.