Bahian Nighthawk vs Cayenne Nightjar
Nyctiprogne vielliardi в сравнении с Setopagis maculosa
Side-by-Side Comparison
| Характеристика | Bahian Nighthawk | Cayenne Nightjar |
|---|---|---|
| Научное название | Nyctiprogne vielliardi | Setopagis maculosa |
| Отряд | Caprimulgiformes | Caprimulgiformes |
| Семейство | Caprimulgidae | Caprimulgidae |
| Охранный статус | Least Concern | Data Deficient |
| Длина | — | — |
| Размах крыльев | 25,4 cm (10.0 in) | 27,8 cm (10.9 in) |
| Масса | 41,0 g (1.45 oz) | 47,0 g (1.66 oz) |
| Питание | Aerial insectivore foraging over Brazilian rocky rivers and adjacent savanna; poorly known. | Catches flying insects in aerial pursuit at night over South American forest and scrub. |
| Размер кладки | 2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Bahian Nighthawk
Thin, buzzy trilling call over Brazilian rivers; high-pitched 'tzeee-tzeee' series; calls in low flight over water; similar to Band-tailed but higher and sharper
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
Bahian Nighthawk
Endemic to northeastern Brazil (Bahia state); resident of open woodland and gallery forest along rivers; rare and localised.
Cayenne Nightjar
Known from a few specimens from French Guiana; possibly a rare resident of coastal forest and scrub; poorly known.
Охранный статус
Bahian Nighthawk
Cayenne Nightjar
How to Tell Them Apart
Bahian Nighthawk
Dark brown with buff and rufous speckles above; pale buff below with brown barring; white tail band; male with white throat patch; no white wing bar; recently described species from …
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
Bahian Nighthawk
A small Caprimulgidae nighthawk (~41 g) of the São Francisco River valley in the state of Bahia, Brazil. Closely related to the Band-tailed Nighthawk; restricted to riverine habitats with open sandy banks. Roosts and forages near rocky rivers. Diet consists of small flying insects. 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.