Timor Nightjar vs Archbold's Nightjar

Caprimulgus ritae compared with Eurostopodus archboldi

Side-by-Side Comparison

Attribute Timor Nightjar Archbold's Nightjar
Scientific Name Caprimulgus ritae 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 Feeds nocturnally on moths and beetles caught in sustained low hawking flights over open and … Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest.
Clutch Size -- 1
Population Trend

Habitat Comparison

Shared Habitats

Timor Nightjar only

None

Archbold's Nightjar only

None

Song & Call Comparison

Timor Nightjar

Song

Poorly documented; presumed churring calls similar to Large-tailed Nightjar complex; vocalizations from Timor essentially unrecorded; calls at dusk from scrub

Archbold's Nightjar

Song

Rarely recorded; presumed churring nocturnal song; low, resonant trilling typical of genus; vocalizations scarcely documented from highland New Guinea

Geographic Range & Migration

Timor Nightjar

Endemic to the Andaman and Nicobar Islands in the eastern Indian Ocean. Resident in forest edge, secondary growth, and coastal scrub.

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

Not Evaluated

Timor Nightjar

Least Concern

Archbold's Nightjar

How to Tell Them Apart

Timor Nightjar

Plumage

Dark sooty-brown upperparts densely patterned with blackish streaks and pale buff spots; whitish throat band; underparts buff with dark brown barring; restricted to Timor with limited information on plumage variation.

Archbold's Nightjar

Plumage

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

Timor Nightjar

A medium-sized nightjar endemic to the island of Timor in the Lesser Sundas, Indonesia. Cryptic brown plumage adapted to dry monsoon forest habitats. Nocturnal insectivore. Limited published information on ecology; considered a range-restricted species requiring further study.

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.

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