Archbold's Nightjar vs Eared Poorwill
Eurostopodus archboldi 比較対象 Nyctiphrynus mcleodii
Side-by-Side Comparison
| 属性 | Archbold's Nightjar | Eared Poorwill |
|---|---|---|
| 学名 | Eurostopodus archboldi | Nyctiphrynus mcleodii |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 41.0 cm (16.1 in) | 24.1 cm (9.5 in) |
| 体重 | 77.0 g (2.72 oz) | 31.775 g (1.12 oz) |
| 食性 | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. | Hawks small flying insects at night in Mexican pine-oak forest on Pacific slopes. |
| 一腹卵数 | 1 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Archbold's Nightjar
Rarely recorded; presumed churring nocturnal song; low, resonant trilling typical of genus; vocalizations scarcely documented from highland New Guinea
Eared Poorwill
Melodic 'poor-will' whistle; soft and repetitive; calls from Mexican pine-oak forest at night; distinctive tonal quality slightly harsher than other poorwills
Geographic Range & Migration
Archbold's Nightjar
Resident of montane forest in central New Guinea (Snow Mountains and Star Mountains) above 1,500 m; very poorly known.
Eared Poorwill
Resident of highland pine-oak forest and scrub in the Sierra Madre Occidental of Mexico (Sinaloa, Durango, Nayarit), at 1,000–2,500 m.
保全状況
Archbold's Nightjar
Eared Poorwill
How to Tell Them Apart
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.
Eared Poorwill
Small; brown and buff mottled with dark vermiculations; small tufted ear-like feathers above eye diagnostic; white throat in male; buff throat in female; small white outer tail spots; Mexican highland …
About These Birds
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。
Eared Poorwill
A small Caprimulgidae poorwill (~32 g) of pine-oak forest and wooded hillsides in the Sierra Madre Occidental of western Mexico. Named for subtle pale ear tufts. Cryptic brown-and-buff plumage; roosts on ground or branches. Nocturnal insectivore. Rarely seen but detected by its repeated whistled calls. Least Concern.