Archbold's Nightjar vs Eared Poorwill
Eurostopodus archboldi в сравнении с Nyctiphrynus mcleodii
Side-by-Side Comparison
| Характеристика | Archbold's Nightjar | Eared Poorwill |
|---|---|---|
| Научное название | Eurostopodus archboldi | Nyctiphrynus mcleodii |
| Отряд | Caprimulgiformes | Caprimulgiformes |
| Семейство | Caprimulgidae | Caprimulgidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 41,0 cm (16.1 in) | 24,1 cm (9.5 in) |
| Масса | 77,0 g (2.72 oz) | 31,775 g (1.12 oz) |
| Питание | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. | Hawks small flying insects at night in Mexican pine-oak forest on Pacific slopes. |
| Размер кладки | 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
Eared Poorwill
Melodic 'poor-will' whistle; soft and repetitive; calls from Mexican pine-oak forest at night; distinctive tonal quality slightly harsher than other poorwills
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.
Eared Poorwill
Resident of highland pine-oak forest and scrub in the Sierra Madre Occidental of Mexico (Sinaloa, Durango, Nayarit), at 1,000–2,500 m.
Охранный статус
Archbold's Nightjar
Eared Poorwill
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.
Eared Poorwill
Small; brown and buff mottled with dark vermiculations; small tufted ear-like feathers above eye diagnostic; white throat in male; buff throat in female; small white outer tail spots; Mexican highland …
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.
Eared Poorwill
A small Caprimulgidae poorwill (~32 g) of pine-oak forest and wooded hillsides in the Sierra Madre Occidental of western Mexico. Named for subtle pale ear tufts. Cryptic brown-and-buff plumage; roosts on ground or branches. Nocturnal insectivore. Rarely seen but detected by its repeated whistled calls. Least Concern.