Spotted Nightjar vs Ocellated Poorwill
Eurostopodus argus so với Nyctiphrynus ocellatus
Side-by-Side Comparison
| Thuộc Tính | Spotted Nightjar | Ocellated Poorwill |
|---|---|---|
| Tên Khoa Học | Eurostopodus argus | Nyctiphrynus ocellatus |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Caprimulgidae | Caprimulgidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 42,7 cm (16.8 in) | 25,1 cm (9.9 in) |
| Khối Lượng | 102,5 g (3.62 oz) | 38,12 g (1.34 oz) |
| Chế Độ Ăn | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … | Nocturnal aerial insectivore; hawks moths and small insects over South American forest interior. |
| Số Trứng | 1 | 2 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Spotted Nightjar only
Ocellated Poorwill only
Không
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
Ocellated Poorwill
Soft, repeated 'oo-whirr'; gentle purring whistle from Amazonian forest floor; calls at night from ground perch; quiet and easily overlooked despite continuous calling
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.
Ocellated Poorwill
Resident of lowland and foothill forest edge, secondary growth, and scrub from Nicaragua south through Panama and northwestern Colombia to Peru.
Tình Trạng Bảo Tồn
Spotted Nightjar
Ocellated Poorwill
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 …
Ocellated Poorwill
Brown mottled above with distinctive buff and rufous ocellated spots on wing coverts giving spotted appearance; pale buff below with dark barring; white throat in male; small white tail spots; …
About These Birds
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.
Ocellated Poorwill
A small Caprimulgidae poorwill (~38 g) of lowland and foothill rainforest understorey from Nicaragua through the Amazon Basin. Named for pale ocellate spots on the wing coverts visible at rest. Roosts on or near the ground; feeds on insects nocturnally. Secretive and infrequently recorded. Least Concern.