Chirruping Nightjar vs Archbold's Nightjar
Caprimulgus griseatus compared with Eurostopodus archboldi
Side-by-Side Comparison
| Attribute | Chirruping Nightjar | Archbold's Nightjar |
|---|---|---|
| Scientific Name | Caprimulgus griseatus | Eurostopodus archboldi |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Caprimulgidae | Caprimulgidae |
| Conservation Status | Not Evaluated | Least Concern |
| Length | — | — |
| Wingspan | — | 41.0 cm (16.1 in) |
| Weight | — | 77.0 g (2.72 oz) |
| Diet | -- | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. |
| Clutch Size | -- | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Chirruping Nightjar
Distinctive chirruping trill; rapid high-pitched 'chi-chi-chi-rrr'; sharper and more staccato than typical Caprimulgus; calls at dusk from open habitats
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
Chirruping Nightjar
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
Chirruping Nightjar
Archbold's Nightjar
How to Tell Them Apart
Chirruping Nightjar
Grey-brown upperparts with blackish streaks and pale buff vermiculations; buff-white chin and throat; underparts barred pale buff and dark brown; recently split from Savanna Nightjar, differing in subtle plumage 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
Chirruping Nightjar
A small nightjar (20-22 cm) of dry scrub and semi-arid savanna in Colombia, Venezuela, and Guyana. Pale grey-brown plumage with fine streaking. Named for its chirruping, insect-like call delivered at dusk. Nocturnal insectivore, feeding on moths and beetles.
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.