Palau Nightjar vs Archbold's Nightjar
Caprimulgus phalaena compared with Eurostopodus archboldi
Side-by-Side Comparison
| Attribute | Palau Nightjar | Archbold's Nightjar |
|---|---|---|
| Scientific Name | Caprimulgus phalaena | Eurostopodus archboldi |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Caprimulgidae | Caprimulgidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 32.3 cm (12.7 in) | 41.0 cm (16.1 in) |
| Weight | 91.5 g (3.23 oz) | 77.0 g (2.72 oz) |
| Diet | Catches flying insects in nocturnal aerial sallies over Palau island forest and scrub. | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. |
| Clutch Size | -- | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Palau Nightjar
Churring call from Palau forest; repetitive hollow trill; endemic island species with poorly documented vocalizations; calls at night from dense vegetation
Archbold's Nightjar
Rarely recorded; presumed churring nocturnal song; low, resonant trilling typical of genus; vocalizations scarcely documented from highland New Guinea
Geographic Range & Migration
Palau Nightjar
Endemic to Palau (Micronesia, western Pacific Ocean); resident of forest and open woodland on the main Palauan islands.
Archbold's Nightjar
Resident of montane forest in central New Guinea (Snow Mountains and Star Mountains) above 1,500 m; very poorly known.
Conservation Status
Palau Nightjar
Archbold's Nightjar
How to Tell Them Apart
Palau Nightjar
Brown and rufous mottled above with dark vermiculations; pale buff throat patch; small pale wing spots; tail barred brown and buff without bold white markings; Palau endemic; relatively large and …
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.
About These Birds
Palau Nightjar
A medium Caprimulgidae nightjar (~92 g) endemic to the Palau Islands in the western Pacific. Inhabits forest, secondary growth, and scrub on main islands. Cryptic brown-and-buff plumage. Nocturnal insectivore. Little studied; biology largely unknown beyond basic observations. Least Concern within its restricted oceanic island range.
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.