Pennant-winged Nightjar vs Archbold's Nightjar
Caprimulgus vexillarius 比較対象 Eurostopodus archboldi
Side-by-Side Comparison
| 属性 | Pennant-winged Nightjar | Archbold's Nightjar |
|---|---|---|
| 学名 | Caprimulgus vexillarius | Eurostopodus archboldi |
| 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) | 41.0 cm (16.1 in) |
| 体重 | 189.70000000000002 g (6.69 oz) | 77.0 g (2.72 oz) |
| 食性 | Crepuscular forager targeting moths, termites, and large beetles; patrols forest edges and clearings at dusk. | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. |
| 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
Archbold's Nightjar
Rarely recorded; presumed churring nocturnal song; low, resonant trilling typical of genus; vocalizations scarcely documented from highland New Guinea
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.
Archbold's Nightjar
Resident of montane forest in central New Guinea (Snow Mountains and Star Mountains) above 1,500 m; very poorly known.
保全状況
Pennant-winged Nightjar
Archbold's 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 …
Archbold's Nightjar
Brown and dark grey with rufous-buff vermiculations; whitish throat patch; pale buff supercilium contrasts with darker crown; no white wing or tail patches; tail barred; New Guinea highlands; few records.
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。
Archbold's Nightjar
ニューギニアの亜高山帯に生息するヨタカで、探検家リチャード・アーチボルドにちなんで命名された。