Pennant-winged Nightjar vs Heinrich's Nightjar
Caprimulgus vexillarius 比較対象 Eurostopodus diabolicus
Side-by-Side Comparison
| 属性 | Pennant-winged Nightjar | Heinrich's Nightjar |
|---|---|---|
| 学名 | Caprimulgus vexillarius | Eurostopodus diabolicus |
| 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) | 39.9 cm (15.7 in) |
| 体重 | 189.70000000000002 g (6.69 oz) | 104.0 g (3.67 oz) |
| 食性 | Crepuscular forager targeting moths, termites, and large beetles; patrols forest edges and clearings at dusk. | Nocturnal aerial insectivore; catches moths and beetles in flight over Sulawesi forest; poorly known. |
| 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
Heinrich's Nightjar
Haunting, hollow 'ku-WOO' repeated rhythmically; deep resonant quality; distinctive mournful whistle carrying through Sulawesi forest at night
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.
Heinrich's Nightjar
Endemic to Sulawesi, Indonesia; resident of montane forest; extremely rare and poorly known, with very few records.
保全状況
Pennant-winged Nightjar
Heinrich'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 …
Heinrich's Nightjar
Rufous-brown and dark brown mottled with buff vermiculations; large pale buff throat patch; pale buff supercilium; no white wing markings; tail darkly barred brown and buff. Poorly known; Sulawesi endemic.
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。
Heinrich's Nightjar
スラウェシ島固有のヨタカで、体重104g。「悪魔のヨタカ」という名で知られる。