Montane Nightjar vs Heinrich's Nightjar
Caprimulgus poliocephalus مقارنةً بـ Eurostopodus diabolicus
Side-by-Side Comparison
| السمة | Montane Nightjar | Heinrich's Nightjar |
|---|---|---|
| الاسم العلمي | Caprimulgus poliocephalus | Eurostopodus diabolicus |
| الرتبة | Caprimulgiformes | Caprimulgiformes |
| الفصيلة | Caprimulgidae | Caprimulgidae |
| حالة الحفاظ | Least Concern | Least Concern |
| الطول | — | — |
| طول الجناح | 31,1 cm (12.2 in) | 39,9 cm (15.7 in) |
| الوزن | 47,050000000000004 g (1.66 oz) | 104,0 g (3.67 oz) |
| النظام الغذائي | -- | Nocturnal aerial insectivore; catches moths and beetles in flight over Sulawesi forest; poorly known. |
| عدد البيض في الوضع | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Montane Nightjar
Churring trill from East African highlands; repetitive 'churr-churr-churr'; slightly higher pitched than lowland species; calls from highland scrub and forest edge
Heinrich's Nightjar
Haunting, hollow 'ku-WOO' repeated rhythmically; deep resonant quality; distinctive mournful whistle carrying through Sulawesi forest at night
Geographic Range & Migration
Montane Nightjar
Heinrich's Nightjar
Endemic to Sulawesi, Indonesia; resident of montane forest; extremely rare and poorly known, with very few records.
حالة الحفاظ
Montane Nightjar
Heinrich's Nightjar
How to Tell Them Apart
Montane Nightjar
Grey-brown upperparts with fine blackish streaks; pale grey head contrasting slightly with browner back; white throat patch; underparts buff barred brown; inhabits high-altitude montane zones in East Africa.
Heinrich's Nightjar
Rufous-brown and dark brown mottled with buff vermiculations; large pale buff throat patch; pale buff supercilium; no white wing markings; tail darkly barred brown and buff. Poorly known; Sulawesi endemic.
About These Birds
Montane Nightjar
A medium-sized nightjar (23-24 cm) found in montane forests and high-altitude grasslands of eastern and southern Africa, from Ethiopia to South Africa. Grey-brown plumage with fine mottling. Nocturnal insectivore, feeding above the forest canopy. Resident at elevations above 1,500 m.
Heinrich's Nightjar
A medium Caprimulgidae nightjar (~104 g) endemic to the forest and forest-edge habitats of Sulawesi, Indonesia. Cryptically patterned brown-and-buff. Nocturnal insectivore; catches moths and beetles in aerial sallies. Little studied and rarely encountered in the field. Least Concern within its Sulawesi range.