Sand-colored Nighthawk vs Archbold's Nightjar
Chordeiles rupestris 比較対象 Eurostopodus archboldi
Side-by-Side Comparison
| 属性 | Sand-colored Nighthawk | Archbold's Nightjar |
|---|---|---|
| 学名 | Chordeiles rupestris | Eurostopodus archboldi |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 32.9 cm (13.0 in) | 41.0 cm (16.1 in) |
| 体重 | 52.25 g (1.84 oz) | 77.0 g (2.72 oz) |
| 食性 | Aerial insectivore; hawks insects over South American river sandbars and open areas, often in flocks. | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. |
| 一腹卵数 | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Sand-colored Nighthawk
Nasal, buzzy 'bzeent' calls; short buzzing trills; colonial roosters produce chorus of soft chirring notes; calls from sandy riverbanks at dusk
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
Sand-colored Nighthawk
Resident of sandy riverbanks and open savanna in the Amazon and Orinoco basins of Venezuela, Colombia, Peru, and Brazil.
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
Sand-colored Nighthawk
Archbold's Nightjar
How to Tell Them Apart
Sand-colored Nighthawk
Pale sandy-buff overall with dark brown vermiculations; white throat and lower underparts; bold white wing bar; white tail with dark terminal band; paler coloration than other nighthawks suits sandy riverbank …
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
Sand-colored Nighthawk
サンドカラードナイトホーク(Chordeiles rupestris)はアマゾン川流域の砂洲や河岸に生息するナイトホークです。砂地に偽装した羽毛が特徴で、地面に産んだ卵は周囲に溶け込みます。薄明時に昆虫を捕食する夜行性の鳥です。
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。