Archbold's Nightjar vs Bahian Nighthawk
Eurostopodus archboldi compared with Nyctiprogne vielliardi
Side-by-Side Comparison
| Attribute | Archbold's Nightjar | Bahian Nighthawk |
|---|---|---|
| Scientific Name | Eurostopodus archboldi | Nyctiprogne vielliardi |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Caprimulgidae | Caprimulgidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 41.0 cm (16.1 in) | 25.4 cm (10.0 in) |
| Weight | 77.0 g (2.72 oz) | 41.0 g (1.45 oz) |
| Diet | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. | Aerial insectivore foraging over Brazilian rocky rivers and adjacent savanna; poorly known. |
| Clutch Size | 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
Bahian Nighthawk
Thin, buzzy trilling call over Brazilian rivers; high-pitched 'tzeee-tzeee' series; calls in low flight over water; similar to Band-tailed but higher and sharper
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.
Bahian Nighthawk
Endemic to northeastern Brazil (Bahia state); resident of open woodland and gallery forest along rivers; rare and localised.
Conservation Status
Archbold's Nightjar
Bahian Nighthawk
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.
Bahian Nighthawk
Dark brown with buff and rufous speckles above; pale buff below with brown barring; white tail band; male with white throat patch; no white wing bar; recently described species from …
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.
Bahian Nighthawk
A small Caprimulgidae nighthawk (~41 g) of the São Francisco River valley in the state of Bahia, Brazil. Closely related to the Band-tailed Nighthawk; restricted to riverine habitats with open sandy banks. Roosts and forages near rocky rivers. Diet consists of small flying insects. Least Concern.