Archbold's Nightjar vs Ocellated Poorwill
Eurostopodus archboldi เปรียบเทียบกับ Nyctiphrynus ocellatus
Side-by-Side Comparison
| คุณสมบัติ | Archbold's Nightjar | Ocellated Poorwill |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Eurostopodus archboldi | Nyctiphrynus ocellatus |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Caprimulgidae | Caprimulgidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 41.0 cm (16.1 in) | 25.1 cm (9.9 in) |
| น้ำหนัก | 77.0 g (2.72 oz) | 38.12 g (1.34 oz) |
| อาหาร | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. | Nocturnal aerial insectivore; hawks moths and small insects over South American forest interior. |
| จำนวนไข่ | 1 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Archbold's Nightjar
Rarely recorded; presumed churring nocturnal song; low, resonant trilling typical of genus; vocalizations scarcely documented from highland New Guinea
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
Archbold's Nightjar
Resident of montane forest in central New Guinea (Snow Mountains and Star Mountains) above 1,500 m; very poorly known.
Ocellated Poorwill
Resident of lowland and foothill forest edge, secondary growth, and scrub from Nicaragua south through Panama and northwestern Colombia to Peru.
สถานะการอนุรักษ์
Archbold's Nightjar
Ocellated Poorwill
How to Tell Them Apart
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.
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
Archbold's Nightjar
A small Caprimulgidae nightjar (~77 g) known from subalpine grasslands and forest margins in the interior mountains of New Guinea. Named after naturalist Richard Archbold. Cryptic brown-patterned plumage. Nocturnal insectivore. Infrequently observed; biology largely undescribed. Least Concern in its montane range.
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.