Heinrich's Nightjar vs Roraiman Nightjar
Eurostopodus diabolicus verglichen mit Setopagis whitelyi
Side-by-Side Comparison
| Merkmal | Heinrich's Nightjar | Roraiman Nightjar |
|---|---|---|
| Wissenschaftlicher Name | Eurostopodus diabolicus | Setopagis whitelyi |
| Ordnung | Caprimulgiformes | Caprimulgiformes |
| Familie | Caprimulgidae | Caprimulgidae |
| Erhaltungsstatus | Least Concern | Least Concern |
| Länge | — | — |
| Flügelspannweite | 39,9 cm (15.7 in) | 31,1 cm (12.2 in) |
| Gewicht | 104,0 g (3.67 oz) | 40,75 g (1.44 oz) |
| Ernährung | Nocturnal aerial insectivore; catches moths and beetles in flight over Sulawesi forest; poorly known. | Nocturnal aerial insectivore; hawks insects over Tepui highland forest and savanna of Venezuela and Guyana. |
| Gelegegröße | 1 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Heinrich's Nightjar
Haunting, hollow 'ku-WOO' repeated rhythmically; deep resonant quality; distinctive mournful whistle carrying through Sulawesi forest at night
Roraiman Nightjar
Churring phrases at moderate pace; rasping trill from tepui scrub and forest edges; slightly deeper than Little Nightjar; calls at dusk from rocky highland terrain
Geographic Range & Migration
Heinrich's Nightjar
Endemic to Sulawesi, Indonesia; resident of montane forest; extremely rare and poorly known, with very few records.
Roraiman Nightjar
Endemic to the Roraima highlands of Venezuela and adjacent northwestern Brazil (Gran Sabana and tepuis), above 1,000 m.
Erhaltungsstatus
Heinrich's Nightjar
Roraiman Nightjar
How to Tell Them Apart
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.
Roraiman Nightjar
Warm rufous-brown and dark brown mottled above; pale buff below with dark barring; white throat patch in male; white outer tail spots in male; buff throat in female; tepui highlands …
About These Birds
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.
Roraiman Nightjar
A small Caprimulgidae nightjar (~41 g) restricted to the tepui highlands of Venezuela, Guyana, and adjacent Brazil, typically above 1,000 m. Named for Mount Roraima. Cryptic brown-patterned plumage. Nocturnal aerial insectivore. Inhabits rocky scrub and forest edges at elevation. Least Concern in its remote tepui range.