Archbold's Nightjar vs Pygmy Nightjar
Eurostopodus archboldi 比較対象 Nyctipolus hirundinaceus
Side-by-Side Comparison
| 属性 | Archbold's Nightjar | Pygmy Nightjar |
|---|---|---|
| 学名 | Eurostopodus archboldi | Nyctipolus hirundinaceus |
| 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) | 24.8 cm (9.8 in) |
| 体重 | 77.0 g (2.72 oz) | 29.0 g (1.02 oz) |
| 食性 | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. | Hawks small flying insects at night over Brazilian scrub (caatinga) and open forest. |
| 一腹卵数 | 1 | 1 |
| 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
Pygmy Nightjar
High, thin churring trill; rapid 'chi-chi-chi' series; tiny for a nightjar; high-pitched reedy quality; calls from caatinga scrub at dusk; contact a thin 'tsip'
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.
Pygmy Nightjar
Endemic to northeastern Brazil (Bahia, Pernambuco, Piauí); resident of caatinga scrub and dry woodland; very restricted range.
保全状況
Archbold's Nightjar
Pygmy Nightjar
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.
Pygmy Nightjar
Tiny; brown and buff mottled above with rufous tones; pale buff below with brown barring; white throat patch in male; buff throat in female; no white wing markings; small white …
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。
Pygmy Nightjar
One of the smallest Caprimulgidae nightjars (~29 g), endemic to the caatinga and cerrado of eastern Brazil. Extremely tiny; pale buff and dark cryptic plumage. Roosts on sandy or stony ground. Named for its swift, swallow-like flight. Feeds on tiny insects at dusk. Least Concern in its open dry-land habitats.