Silky-tailed Nightjar vs Archbold's Nightjar
Antrostomus sericocaudatus 비교 대상 Eurostopodus archboldi
Side-by-Side Comparison
| 속성 | Silky-tailed Nightjar | Archbold's Nightjar |
|---|---|---|
| 학명 | Antrostomus sericocaudatus | Eurostopodus archboldi |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Caprimulgidae | Caprimulgidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 32.1 cm (12.6 in) | 41.0 cm (16.1 in) |
| 체중 | 77.5 g (2.73 oz) | 77.0 g (2.72 oz) |
| 식성 | Hawks moths and beetles in nocturnal aerial sallies over South American lowland and foothill forest. | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. |
| 산란 수 | 2 | 1 |
| 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
Archbold's Nightjar
Rarely recorded; presumed churring nocturnal song; low, resonant trilling typical of genus; vocalizations scarcely documented from highland New Guinea
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.
Archbold's Nightjar
Resident of montane forest in central New Guinea (Snow Mountains and Star Mountains) above 1,500 m; very poorly known.
보전 상태
Silky-tailed Nightjar
Archbold's Nightjar
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 …
Archbold's Nightjar
Brown and dark grey with rufous-buff vermiculations; whitish throat patch; pale buff supercilium contrasts with darker crown; no white wing or tail patches; tail barred; New Guinea highlands; few records.
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.
Archbold's Nightjar
뉴기니아 아고산 초원과 숲에 서식하는 소형 쏙독새(~77g). 아치볼드야행소쏙독새라고도 불린다. 관심필요종.