Silky-tailed Nightjar vs Antillean Nighthawk
Antrostomus sericocaudatus 비교 대상 Chordeiles gundlachii
Side-by-Side Comparison
| 속성 | Silky-tailed Nightjar | Antillean Nighthawk |
|---|---|---|
| 학명 | Antrostomus sericocaudatus | Chordeiles gundlachii |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Caprimulgidae | Caprimulgidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 32.1 cm (12.6 in) | 34.2 cm (13.5 in) |
| 체중 | 77.5 g (2.73 oz) | 56.05 g (1.98 oz) |
| 식성 | Hawks moths and beetles in nocturnal aerial sallies over South American lowland and foothill forest. | Catches flying insects in aerial sallies over Caribbean open country and coastal scrub at dusk. |
| 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
Antillean Nighthawk
Distinctive 'kill-and-dee-dick' or 'killydee'; buzzy nasal call audible overhead; faster and shorter phrasing than Common Nighthawk; Caribbean accent clear
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.
Antillean Nighthawk
Breeds in the Caribbean (Bahamas, Cuba, Cayman Islands, Jamaica) and Florida Keys; partially migratory within the Caribbean region.
보전 상태
Silky-tailed Nightjar
Antillean 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 …
Antillean Nighthawk
Brown and buff mottled above with dark brown streaking; white throat patch in male; barred buff-white underparts; white wing bar across primaries; white tail band in male; female has 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.
Antillean Nighthawk
안틸리스나이트호크(Chordeiles gundlachii)는 카리브해 섬들에 서식하는 나이트호크입니다. 여름에는 카리브해에서 번식하고 겨울에는 남아메리카로 이동합니다. 날개의 흰 띠가 특징입니다.