Short-tailed Nighthawk vs Cayenne Nightjar
Lurocalis semitorquatus 比較対象 Setopagis maculosa
Side-by-Side Comparison
| 属性 | Short-tailed Nighthawk | Cayenne Nightjar |
|---|---|---|
| 学名 | Lurocalis semitorquatus | Setopagis maculosa |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Data Deficient |
| 体長 | — | — |
| 翼開長 | 37.1 cm (14.6 in) | 27.8 cm (10.9 in) |
| 体重 | 80.7 g (2.85 oz) | 47.0 g (1.66 oz) |
| 食性 | Aerial insectivore; hawks large beetles and moths at night over South American forest canopy and … | Catches flying insects in aerial pursuit at night over South American forest and scrub. |
| 一腹卵数 | 1 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Short-tailed Nighthawk
Loud, frog-like 'wok' or 'bok' repeated at dusk; hollow resonant quality; calls from high canopy in flight; rapid series when excited; distinctive and far-carrying
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
Short-tailed Nighthawk
Resident of lowland forest edge and open woodland from Mexico through Central America and tropical South America to Bolivia and Brazil.
Cayenne Nightjar
Known from a few specimens from French Guiana; possibly a rare resident of coastal forest and scrub; poorly known.
保全状況
Short-tailed Nighthawk
Cayenne Nightjar
How to Tell Them Apart
Short-tailed Nighthawk
Dark sooty-brown with buff and rufous spotting; rufous-spotted throat forms partial collar; short rounded tail barred dark brown and buff; lacks white wing bar; darker and more uniformly colored than …
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
Short-tailed Nighthawk
A medium Caprimulgidae nighthawk (~81 g) of forest canopy edges and second growth across much of tropical South America and Central America. Dark brown plumage with a white throat patch. Flies swiftly above the canopy at dusk, catching insects. Rounded wings and very short tail are distinctive. Least Concern.
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.