Plain Nightjar vs Cayenne Nightjar
Caprimulgus inornatus 对比 Setopagis maculosa
Side-by-Side Comparison
| 属性 | Plain Nightjar | Cayenne Nightjar |
|---|---|---|
| 学名 | Caprimulgus inornatus | Setopagis maculosa |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Data Deficient |
| 体长 | — | — |
| 翼展 | 30.6 cm (12.0 in) | 27.8 cm (10.9 in) |
| 体重 | 45.75 g (1.61 oz) | 47.0 g (1.66 oz) |
| 食性 | Feeds nocturnally on moths and large beetles in erratic low-level hunting flights over tropical scrub. | Catches flying insects in aerial pursuit at night over South American forest and scrub. |
| 产卵数 | 2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Plain Nightjar
Monotonous churring trill; steady 'churrrrr' from African savanna; calls persistently at night; plain plumage matched by relatively unvaried, repetitive song
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
Plain Nightjar
Found from Ethiopia and Somalia south to Kenya and Tanzania. Resident in arid acacia scrub and dry open country. Closely related to Nubian Nightjar.
Cayenne Nightjar
Known from a few specimens from French Guiana; possibly a rare resident of coastal forest and scrub; poorly known.
保护状况
Plain Nightjar
Cayenne Nightjar
How to Tell Them Apart
Plain Nightjar
Uniformly plain sandy-grey upperparts with minimal patterning; faint pale supercilium; small whitish throat spot; underparts pale buff with fine barring; among the least boldly marked nightjars, blending into Sahel scrubland.
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
Plain Nightjar
素色夜鹰，体长21–23厘米，分布于非洲萨赫勒地带（塞内加尔至索马里），淡沙色羽毛，游荡性。
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.