Bonaparte's Nightjar vs Archbold's Nightjar
Caprimulgus concretus verglichen mit Eurostopodus archboldi
Side-by-Side Comparison
| Merkmal | Bonaparte's Nightjar | Archbold's Nightjar |
|---|---|---|
| Wissenschaftlicher Name | Caprimulgus concretus | Eurostopodus archboldi |
| Ordnung | Caprimulgiformes | Caprimulgiformes |
| Familie | Caprimulgidae | Caprimulgidae |
| Erhaltungsstatus | Vulnerable | Least Concern |
| Länge | — | — |
| Flügelspannweite | 32,8 cm (12.9 in) | 41,0 cm (16.1 in) |
| Gewicht | 57,5 g (2.03 oz) | 77,0 g (2.72 oz) |
| Ernährung | Crepuscular and nocturnal insectivore; catches moths, beetles, and large flying insects on the wing in … | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. |
| Gelegegröße | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Bonaparte's Nightjar
Churring call from Borneo lowland forest; repetitive hollow trill; rarely recorded; calls at night from dense humid forest; alarm a sharp bark note
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
Bonaparte's Nightjar
Found in highland Borneo and Sumatra in montane forest at 1,000–2,500 m. Endemic to the Sundaic region; infrequently recorded.
Archbold's Nightjar
Resident of montane forest in central New Guinea (Snow Mountains and Star Mountains) above 1,500 m; very poorly known.
Erhaltungsstatus
Bonaparte's Nightjar
Archbold's Nightjar
How to Tell Them Apart
Bonaparte's Nightjar
Rich dark brown upperparts with black-centred feathers and buff-chestnut edging; white throat patch; densely barred underparts; males have white outer tail feathers; Bornean endemic with notably deep brown tones.
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
Bonaparte's Nightjar
A small, secretive nightjar (20-22 cm) of lowland and peat-swamp forests in Borneo and Sumatra. Dark brown plumage with fine barring. Nocturnal insectivore, poorly known due to dense forest habitat. Classified as Near Threatened due to ongoing deforestation.
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.