Cayenne Nightjar vs Least Poorwill
Setopagis maculosa comparé à Siphonorhis brewsteri
Side-by-Side Comparison
| Attribut | Cayenne Nightjar | Least Poorwill |
|---|---|---|
| Nom scientifique | Setopagis maculosa | Siphonorhis brewsteri |
| Ordre | Caprimulgiformes | Caprimulgiformes |
| Famille | Caprimulgidae | Caprimulgidae |
| Statut de conservation | Data Deficient | Near Threatened |
| Longueur | — | — |
| Envergure | 27,8 cm (10.9 in) | 22,7 cm (8.9 in) |
| Poids | 47,0 g (1.66 oz) | 44,0 g (1.55 oz) |
| Régime alimentaire | Catches flying insects in aerial pursuit at night over South American forest and scrub. | Nocturnal aerial insectivore; catches small flying insects near ground over Hispaniolan dry scrub. |
| Taille de la couvée | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Cayenne Nightjar
Poorly known vocalizations; presumed churring trill based on genus; extremely rare recordings; distinct from other Setopagis by subtle tonal and rhythm differences
Least Poorwill
Soft, melodic 'poor-will' whistle; gentle and repetitive; calls from dry scrub at night; higher-pitched than Common Poorwill; subtle and often overlooked
Geographic Range & Migration
Cayenne Nightjar
Known from a few specimens from French Guiana; possibly a rare resident of coastal forest and scrub; poorly known.
Least Poorwill
Endemic to Hispaniola (Haiti and Dominican Republic); resident of open dry forest and scrub; rare and sparsely distributed.
Statut de conservation
Cayenne Nightjar
Least Poorwill
How to Tell Them Apart
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 …
Least Poorwill
Small; brown and buff mottled with fine dark vermiculations; pale buff throat bordered by dark lateral spots; buff and dark barred tail; no white in wings or tail; male with …
About These Birds
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.
Least Poorwill
A small Caprimulgidae poorwill (~44 g) of dry scrub and thorn woodland in Hispaniola. Brown-and-buff cryptic plumage. Little studied; biology poorly known for this island endemic. Feeds on insects at night. Near Threatened owing to ongoing habitat degradation and deforestation on Hispaniola. Rarely encountered.