Andaman Nightjar vs Ladder-tailed Nightjar
Caprimulgus andamanicus so với Hydropsalis climacocerca
Side-by-Side Comparison
| Thuộc Tính | Andaman Nightjar | Ladder-tailed Nightjar |
|---|---|---|
| Tên Khoa Học | Caprimulgus andamanicus | Hydropsalis climacocerca |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Caprimulgidae | Caprimulgidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 36,4 cm (14.3 in) | 29,9 cm (11.8 in) |
| Khối Lượng | 66,06666666666666 g (2.33 oz) | 48,0 g (1.69 oz) |
| Chế Độ Ăn | Night-hunting insectivore targeting moths, flying beetles, and winged ants in erratic low-altitude aerial passes. | Nocturnal aerial insectivore; hawks insects over Amazonian river margins and forest clearings. |
| Số Trứng | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Andaman Nightjar
Loud 'chuck-chuck-trrr'; hollow knocking prefix followed by trill; endemic to Andaman Islands; calls at night from forest edges and clearings; similar to Large-tailed
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
Andaman Nightjar
Endemic to the Philippines including Luzon and Mindanao. Resident in lowland and submontane forest and forest edge up to 1,800 m.
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.
Tình Trạng Bảo Tồn
Andaman Nightjar
Ladder-tailed Nightjar
How to Tell Them Apart
Andaman Nightjar
Warm rufous-brown upperparts with black-centred scapulars and pale buff streaks; broad white throat patch; males show white outer tail feathers; underparts buff barred brown; endemic island coloration slightly warmer than …
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
Andaman Nightjar
A medium-sized nightjar (24-26 cm) endemic to the Andaman Islands in the Bay of Bengal. Dark brown plumage with rufous collar spots. Nocturnal insectivore of lowland and mangrove forests. A sedentary species with a restricted island range.
Ladder-tailed Nightjar
A small Caprimulgidae nightjar (~48 g) of rivers, oxbow lakes, and riverine forest edges throughout the Amazon Basin. Males possess white-banded, step-like outer tail feathers giving a ladder appearance. Roosts on branches and sandy banks near water. Feeds on insects at night. Least Concern.