Sand-colored Nighthawk vs Spotted Nightjar
Chordeiles rupestris 比較対象 Eurostopodus argus
Side-by-Side Comparison
| 属性 | Sand-colored Nighthawk | Spotted Nightjar |
|---|---|---|
| 学名 | Chordeiles rupestris | Eurostopodus argus |
| 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) | 42.7 cm (16.8 in) |
| 体重 | 52.25 g (1.84 oz) | 102.5 g (3.62 oz) |
| 食性 | Aerial insectivore; hawks insects over South American river sandbars and open areas, often in flocks. | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … |
| 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
Spotted Nightjar
Loud churring 'good-lord-deliver-us' repeated at dusk; melodic bubbling quality; also emits hollow 'cow-cow-cow' series and soft frog-like croaking
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.
Spotted Nightjar
Resident and partial migrant of open woodland, grassland, and scrub across mainland Australia and migrating to New Guinea and Indonesia in winter.
保全状況
Sand-colored Nighthawk
Spotted 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 …
Spotted Nightjar
Cryptically mottled grey-brown, rufous, and black with intricate vermiculations; distinctive large white spots on wing coverts; white throat patch; no white in wings or tail. Sexes similar with slight pattern …
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。
Spotted Nightjar
オーストラリア本土のスピニフェックス草原に生息するヨタカで、体重103g。