Spotted Nightjar vs Ladder-tailed Nightjar
Eurostopodus argus 비교 대상 Hydropsalis climacocerca
Side-by-Side Comparison
| 속성 | Spotted Nightjar | Ladder-tailed Nightjar |
|---|---|---|
| 학명 | Eurostopodus argus | Hydropsalis climacocerca |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Caprimulgidae | Caprimulgidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 42.7 cm (16.8 in) | 29.9 cm (11.8 in) |
| 체중 | 102.5 g (3.62 oz) | 48.0 g (1.69 oz) |
| 식성 | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … | Nocturnal aerial insectivore; hawks insects over Amazonian river margins and forest clearings. |
| 산란 수 | 1 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Spotted Nightjar
Loud churring 'good-lord-deliver-us' repeated at dusk; melodic bubbling quality; also emits hollow 'cow-cow-cow' series and soft frog-like croaking
Ladder-tailed Nightjar
Resonant churring trill over Amazonian rivers; 'churr-churr' with hollow quality; calls from riverside sandbars and beaches at dusk; distinctive riverside habitat singer
Geographic Range & Migration
Spotted Nightjar
Resident and partial migrant of open woodland, grassland, and scrub across mainland Australia and migrating to New Guinea and Indonesia in winter.
Ladder-tailed Nightjar
Resident of sandy riverbanks, open woodland, and savanna in the Amazon basin from Colombia and Peru south to Bolivia and central Brazil.
보전 상태
Spotted Nightjar
Ladder-tailed Nightjar
How to Tell Them Apart
Spotted Nightjar
Cryptically mottled grey-brown, rufous, and black with intricate vermiculations; distinctive large white spots on wing coverts; white throat patch; no white in wings or tail. Sexes similar with slight pattern …
Ladder-tailed Nightjar
Male brown and buff mottled above; white throat; graduated tail with white ladder pattern on inner webs of outer rectrices diagnostic; white wing patches. Female has buff throat; tail barred …
About These Birds
Spotted Nightjar
호주 개방 삼림, 스피니펙스 초원, 반건조 덤불에 서식하는 중형 쏙독새(~103g). 눈점박이야행소쏙독새라고도 불린다. 관심필요종.
Ladder-tailed Nightjar
사다리꼬리나이트자는 남아메리카 아마존 강 유역에 서식하는 쏙독새 종류이다. 수컷은 사다리 모양의 계단식 꼬리가 특징적이며 갈색과 황갈색 계열의 얼룩무늬 깃털을 가진다. 강가의 모래사장이나 자갈밭에서 번식한다.