Lesser Nighthawk vs Sand-colored Nighthawk
Chordeiles acutipennis 比較対象 Chordeiles rupestris
Side-by-Side Comparison
| 属性 | Lesser Nighthawk | Sand-colored Nighthawk |
|---|---|---|
| 学名 | Chordeiles acutipennis | Chordeiles rupestris |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 33.0 cm (13.0 in) | 32.9 cm (13.0 in) |
| 体重 | 50.0 g (1.76 oz) | 52.25 g (1.84 oz) |
| 食性 | Hawks small flying insects at dusk and dawn over North and South American arid scrub … | Aerial insectivore; hawks insects over South American river sandbars and open areas, often in flocks. |
| 一腹卵数 | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Lesser Nighthawk
Loud purring trill; buzzy 'brrrrr' given in flight; lower and softer than Common Nighthawk; males display with booming wingbeats; calls at dusk over deserts
Sand-colored Nighthawk
Nasal, buzzy 'bzeent' calls; short buzzing trills; colonial roosters produce chorus of soft chirring notes; calls from sandy riverbanks at dusk
Geographic Range & Migration
Lesser Nighthawk
Breeds in open arid scrub from southwestern USA south through Central America to western South America; winters in Mexico and northern South America.
Sand-colored Nighthawk
Resident of sandy riverbanks and open savanna in the Amazon and Orinoco basins of Venezuela, Colombia, Peru, and Brazil.
保全状況
Lesser Nighthawk
Sand-colored Nighthawk
How to Tell Them Apart
Lesser Nighthawk
Brown and buff mottled above; buff-white below with brown barring; white throat in male; white wing bar closer to wingtip than in Common Nighthawk; buff tail band. Female with buff …
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 …
About These Birds
Lesser Nighthawk
ヒメナイトホーク(Chordeiles acutipennis)は北アメリカ南西部からブラジルにかけて広く分布するナイトホークです。体長約20cmで、細長い翼と独特の飛行パターンが特徴です。薄明時に昆虫を捕食し、砂地や岩石地の地面に営巣します。
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。