Bonaparte's Nightjar vs Cayenne Nightjar
Caprimulgus concretus 对比 Setopagis maculosa
Side-by-Side Comparison
| 属性 | Bonaparte's Nightjar | Cayenne Nightjar |
|---|---|---|
| 学名 | Caprimulgus concretus | Setopagis maculosa |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Vulnerable | Data Deficient |
| 体长 | — | — |
| 翼展 | 32.8 cm (12.9 in) | 27.8 cm (10.9 in) |
| 体重 | 57.5 g (2.03 oz) | 47.0 g (1.66 oz) |
| 食性 | Crepuscular and nocturnal insectivore; catches moths, beetles, and large flying insects on the wing in … | Catches flying insects in aerial pursuit at night over South American forest and scrub. |
| 产卵数 | 1 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Bonaparte's Nightjar
Churring call from Borneo lowland forest; repetitive hollow trill; rarely recorded; calls at night from dense humid forest; alarm a sharp bark note
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
Bonaparte's Nightjar
Found in highland Borneo and Sumatra in montane forest at 1,000–2,500 m. Endemic to the Sundaic region; infrequently recorded.
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
Bonaparte's Nightjar
Cayenne Nightjar
How to Tell Them Apart
Bonaparte's Nightjar
Rich dark brown upperparts with black-centred feathers and buff-chestnut edging; white throat patch; densely barred underparts; males have white outer tail feathers; Bornean endemic with notably deep brown tones.
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
Bonaparte's Nightjar
波拿巴夜鹰，体长20–22厘米，分布于婆罗洲和苏门答腊泥炭沼泽森林，近危（因森林砍伐）。
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.