Silky-tailed Nightjar vs Lesser Nighthawk
Antrostomus sericocaudatus 비교 대상 Chordeiles acutipennis
Side-by-Side Comparison
| 속성 | Silky-tailed Nightjar | Lesser Nighthawk |
|---|---|---|
| 학명 | Antrostomus sericocaudatus | Chordeiles acutipennis |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Caprimulgidae | Caprimulgidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 32.1 cm (12.6 in) | 33.0 cm (13.0 in) |
| 체중 | 77.5 g (2.73 oz) | 50.0 g (1.76 oz) |
| 식성 | Hawks moths and beetles in nocturnal aerial sallies over South American lowland and foothill forest. | Hawks small flying insects at dusk and dawn over North and South American arid scrub … |
| 산란 수 | 2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Silky-tailed Nightjar
Whistled, rolling 'pwee-pwee-pwee'; melodic phrase from Amazonian forest; calls persistently at dusk; slightly slurred delivery; alarm a sudden sharp note
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
Geographic Range & Migration
Silky-tailed Nightjar
Resident of lowland and foothill forest in southern Brazil (São Paulo, Minas Gerais, Santa Catarina) and adjacent Paraguay and Argentina.
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.
보전 상태
Silky-tailed Nightjar
Lesser Nighthawk
How to Tell Them Apart
Silky-tailed Nightjar
Brown and buff mottled above with dark vermiculations; white gorget in male; outer tail feathers with silky-white inner webs giving smooth appearance; pale buff below; female with buff gorget and …
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 …
About These Birds
Silky-tailed Nightjar
비단 꼬리 나이트자는 남아메리카 중부와 동부의 아마존 및 세라도 지역에 서식합니다. 비단처럼 부드러운 꼬리 깃털이 특징이며, 삼림 가장자리와 개활 삼림에 서식합니다.
Lesser Nighthawk
소쏙독새(Chordeiles acutipennis)는 북아메리카 남부부터 남아메리카 북부까지 분포하는 야행성 새입니다. 날개에 흰 무늬가 있으며, 열린 서식지와 건조 지역을 선호합니다. 비행 중에 곤충을 포획합니다.