Pennant-winged Nightjar vs Papuan Nightjar
Caprimulgus vexillarius 比較対象 Eurostopodus papuensis
Side-by-Side Comparison
| 属性 | Pennant-winged Nightjar | Papuan Nightjar |
|---|---|---|
| 学名 | Caprimulgus vexillarius | Eurostopodus papuensis |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 41.4 cm (16.3 in) | 37.9 cm (14.9 in) |
| 体重 | 189.70000000000002 g (6.69 oz) | 80.5 g (2.84 oz) |
| 食性 | Crepuscular forager targeting moths, termites, and large beetles; patrols forest edges and clearings at dusk. | Hawks large flying insects, especially moths, at night over Papuan forest and savanna. |
| 一腹卵数 | 1-2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Pennant-winged Nightjar
Melodic whistled churring; cleaner, more musical than most African nightjars; male's display call a repeated mellow whistle; calls at dusk across miombo woodland
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
Pennant-winged Nightjar
Found across sub-Saharan Africa from Guinea east to Ethiopia and south to Angola. Resident in dry savanna, open woodland, and Sahel scrubland.
Papuan Nightjar
Resident of savanna woodland, grass, and scrub in lowland New Guinea (Papua, Indonesia and Papua New Guinea).
保全状況
Pennant-winged Nightjar
Papuan Nightjar
How to Tell Them Apart
Pennant-winged Nightjar
Large; dark brown and black upperparts with white wing-covert spots; large white primary patches visible in flight; breeding males grow extraordinary white pennant-shaped ninth primary extensions reaching 50 cm; females …
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
Pennant-winged Nightjar
体長24〜28cmの南アフリカの開けた林地に生息するヨタカ。繁殖期の雄は最長60cmに及ぶ白い飾り羽根を持ち、アフリカ内で長距離渡りを行う。
Papuan Nightjar
ニューギニア南部の低地に生息するヨタカで、体重81g。