Archbold's Nightjar vs Spot-tailed Nightjar
Eurostopodus archboldi comparado con Hydropsalis maculicaudus
Side-by-Side Comparison
| Atributo | Archbold's Nightjar | Spot-tailed Nightjar |
|---|---|---|
| Nombre científico | Eurostopodus archboldi | Hydropsalis maculicaudus |
| Orden | Caprimulgiformes | Caprimulgiformes |
| Familia | Caprimulgidae | Caprimulgidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 41,0 cm (16.1 in) | 25,8 cm (10.2 in) |
| Peso | 77,0 g (2.72 oz) | 32,125 g (1.13 oz) |
| Dieta | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. | Catches flying insects in nocturnal aerial pursuit over Central and South American grassland. |
| Tamaño de la puesta | 1 | 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
Spot-tailed Nightjar
Soft, rhythmic churring; gentle 'trrr-trrr' from humid grassland; calls low from ground; quieter than most nightjars; alarm a subtle 'chek'; small and inconspicuous
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.
Spot-tailed Nightjar
Resident of open cerrado, scrub, and forest edge in interior South America from Venezuela and the Guianas south to Bolivia, Brazil, and Paraguay.
Estado de conservación
Archbold's Nightjar
Spot-tailed Nightjar
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.
Spot-tailed Nightjar
Small; brown and buff mottled above; pale buff below with dark barring; white throat in male; distinctive white spots on rounded tail distinguishing it from similar Hydropsalis; buff throat in …
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.
Spot-tailed Nightjar
El añapero de cola moteada es un pequeño chotacabras que habita en sabanas y pastizales desde México hasta Argentina, activo al amanecer y al anochecer.