Sand-colored Nighthawk vs Heinrich's Nightjar
Chordeiles rupestris 比較対象 Eurostopodus diabolicus
Side-by-Side Comparison
| 属性 | Sand-colored Nighthawk | Heinrich's Nightjar |
|---|---|---|
| 学名 | Chordeiles rupestris | Eurostopodus diabolicus |
| 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) | 39.9 cm (15.7 in) |
| 体重 | 52.25 g (1.84 oz) | 104.0 g (3.67 oz) |
| 食性 | Aerial insectivore; hawks insects over South American river sandbars and open areas, often in flocks. | Nocturnal aerial insectivore; catches moths and beetles in flight over Sulawesi forest; poorly known. |
| 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
Heinrich's Nightjar
Haunting, hollow 'ku-WOO' repeated rhythmically; deep resonant quality; distinctive mournful whistle carrying through Sulawesi forest at night
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.
Heinrich's Nightjar
Endemic to Sulawesi, Indonesia; resident of montane forest; extremely rare and poorly known, with very few records.
保全状況
Sand-colored Nighthawk
Heinrich'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 …
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
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。
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。