Pygmy Nightjar vs Cayenne Nightjar
Nyctipolus hirundinaceus so với Setopagis maculosa
Side-by-Side Comparison
| Thuộc Tính | Pygmy Nightjar | Cayenne Nightjar |
|---|---|---|
| Tên Khoa Học | Nyctipolus hirundinaceus | Setopagis maculosa |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Caprimulgidae | Caprimulgidae |
| Tình Trạng Bảo Tồn | Least Concern | Data Deficient |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 24,8 cm (9.8 in) | 27,8 cm (10.9 in) |
| Khối Lượng | 29,0 g (1.02 oz) | 47,0 g (1.66 oz) |
| Chế Độ Ăn | Hawks small flying insects at night over Brazilian scrub (caatinga) and open forest. | Catches flying insects in aerial pursuit at night over South American forest and scrub. |
| Số Trứng | 1 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Pygmy Nightjar
High, thin churring trill; rapid 'chi-chi-chi' series; tiny for a nightjar; high-pitched reedy quality; calls from caatinga scrub at dusk; contact a thin 'tsip'
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
Pygmy Nightjar
Endemic to northeastern Brazil (Bahia, Pernambuco, Piauí); resident of caatinga scrub and dry woodland; very restricted range.
Cayenne Nightjar
Known from a few specimens from French Guiana; possibly a rare resident of coastal forest and scrub; poorly known.
Tình Trạng Bảo Tồn
Pygmy Nightjar
Cayenne Nightjar
How to Tell Them Apart
Pygmy Nightjar
Tiny; brown and buff mottled above with rufous tones; pale buff below with brown barring; white throat patch in male; buff throat in female; no white wing markings; small white …
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
Pygmy Nightjar
One of the smallest Caprimulgidae nightjars (~29 g), endemic to the caatinga and cerrado of eastern Brazil. Extremely tiny; pale buff and dark cryptic plumage. Roosts on sandy or stony ground. Named for its swift, swallow-like flight. Feeds on tiny insects at dusk. Least Concern in its open dry-land habitats.
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.