Sulawesi Nightjar vs Spotted Nightjar
Caprimulgus celebensis so với Eurostopodus argus
Side-by-Side Comparison
| Thuộc Tính | Sulawesi Nightjar | Spotted Nightjar |
|---|---|---|
| Tên Khoa Học | Caprimulgus celebensis | Eurostopodus argus |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Caprimulgidae | Caprimulgidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 37,4 cm (14.7 in) | 42,7 cm (16.8 in) |
| Khối Lượng | 63,166666666666664 g (2.23 oz) | 102,5 g (3.62 oz) |
| Chế Độ Ăn | Crepuscular insectivore specialising in large moths; also takes beetles and flies in low-level aerial sallies. | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … |
| Số Trứng | -- | 1 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Sulawesi Nightjar only
Không
Spotted Nightjar only
Song & Call Comparison
Sulawesi Nightjar
Loud churring call; hollow 'chuck' notes with extended trill; calls at night from Sulawesi forest and scrub; endemic; alarm a sharp bark note
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
Geographic Range & Migration
Sulawesi Nightjar
Found in Somalia, Kenya, and southern Ethiopia. Resident in arid thorn scrub and open acacia woodland. Uncommon and poorly known.
Spotted Nightjar
Resident and partial migrant of open woodland, grassland, and scrub across mainland Australia and migrating to New Guinea and Indonesia in winter.
Tình Trạng Bảo Tồn
Sulawesi Nightjar
Spotted Nightjar
How to Tell Them Apart
Sulawesi Nightjar
Richly marked rufous-brown and dark grey upperparts; pale buff spotting on wing coverts; white throat patch; underparts buff-white barred brown; Sulawesi endemic showing warmer tones than many regional congeners.
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 …
About These Birds
Sulawesi Nightjar
A medium-sized nightjar (24-26 cm) endemic to the island of Sulawesi, Indonesia. Inhabits lowland and montane forests. Dark brown plumage with cryptic patterning. Nocturnal insectivore. A sedentary species; limited ecological data available due to restricted range.
Spotted Nightjar
A medium Caprimulgidae nightjar (~103 g) of open woodland, spinifex grassland, and rocky ridges across mainland Australia. Intricately spotted and barred brown, grey, and buff. Cryptic by day on the ground among leaf litter. Crepuscular and nocturnal; feeds on flying insects caught in aerial pursuit. Least Concern.