Palau Nightjar vs Cayenne Nightjar
Caprimulgus phalaena compared with Setopagis maculosa
Side-by-Side Comparison
| Attribute | Palau Nightjar | Cayenne Nightjar |
|---|---|---|
| Scientific Name | Caprimulgus phalaena | Setopagis maculosa |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Caprimulgidae | Caprimulgidae |
| Conservation Status | Least Concern | Data Deficient |
| Length | — | — |
| Wingspan | 32.3 cm (12.7 in) | 27.8 cm (10.9 in) |
| Weight | 91.5 g (3.23 oz) | 47.0 g (1.66 oz) |
| Diet | Catches flying insects in nocturnal aerial sallies over Palau island forest and scrub. | Catches flying insects in aerial pursuit at night over South American forest and scrub. |
| Clutch Size | -- | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Palau Nightjar
Churring call from Palau forest; repetitive hollow trill; endemic island species with poorly documented vocalizations; calls at night from dense vegetation
Cayenne Nightjar
Poorly known vocalizations; presumed churring trill based on genus; extremely rare recordings; distinct from other Setopagis by subtle tonal and rhythm differences
Geographic Range & Migration
Palau Nightjar
Endemic to Palau (Micronesia, western Pacific Ocean); resident of forest and open woodland on the main Palauan islands.
Cayenne Nightjar
Known from a few specimens from French Guiana; possibly a rare resident of coastal forest and scrub; poorly known.
Conservation Status
Palau Nightjar
Cayenne Nightjar
How to Tell Them Apart
Palau Nightjar
Brown and rufous mottled above with dark vermiculations; pale buff throat patch; small pale wing spots; tail barred brown and buff without bold white markings; Palau endemic; relatively large and …
Cayenne Nightjar
Brown and buff mottled above with dark vermiculations; pale buff below with darker barring; white throat patch in male; outer tail spots white; data deficient; known from only a handful …
About These Birds
Palau Nightjar
A medium Caprimulgidae nightjar (~92 g) endemic to the Palau Islands in the western Pacific. Inhabits forest, secondary growth, and scrub on main islands. Cryptic brown-and-buff plumage. Nocturnal insectivore. Little studied; biology largely unknown beyond basic observations. Least Concern within its restricted oceanic island range.
Cayenne Nightjar
A small Caprimulgidae nightjar (~47 g) from coastal French Guiana and adjacent Suriname. Known from only a handful of specimens; biology essentially unknown. Mottled brown plumage presumed cryptic in leaf litter. Presumed nocturnal insectivore. Data Deficient due to extreme rarity of confirmed records in the wild.