Lesser Nighthawk vs Jamaican Poorwill
Chordeiles acutipennis ile kıyaslandığında Siphonorhis americana
Side-by-Side Comparison
| Özellik | Lesser Nighthawk | Jamaican Poorwill |
|---|---|---|
| Bilimsel Ad | Chordeiles acutipennis | Siphonorhis americana |
| Takım | Caprimulgiformes | Caprimulgiformes |
| Familya | Caprimulgidae | Caprimulgidae |
| Koruma Durumu | Least Concern | Not Evaluated |
| Uzunluk | — | — |
| Kanat Açıklığı | 33,0 cm (13.0 in) | 27,0 cm (10.6 in) |
| Ağırlık | 50,0 g (1.76 oz) | 55,4 g (1.95 oz) |
| Beslenme | Hawks small flying insects at dusk and dawn over North and South American arid scrub … | Caught flying insects at night in Jamaican dry forest; presumed extinct since 19th century. |
| Kuluçka Büyüklüğü | 1-2 | -- |
| Population Trend | — | — |
Habitat Comparison
Ortak Yaşam Alanları
Hiçbiri
Lesser Nighthawk only
Jamaican Poorwill only
Song & Call Comparison
Lesser Nighthawk
Loud purring trill; buzzy 'brrrrr' given in flight; lower and softer than Common Nighthawk; males display with booming wingbeats; calls at dusk over deserts
Jamaican Poorwill
Possibly extinct; historically described as soft 'wheep-wheep'; whistled, purring call from dry limestone forest; no modern recordings exist
Geographic Range & Migration
Lesser Nighthawk
Breeds in open arid scrub from southwestern USA south through Central America to western South America; winters in Mexico and northern South America.
Jamaican Poorwill
Endemic to Jamaica; possibly extinct; known from historical specimens; no confirmed records since the 19th century.
Koruma Durumu
Lesser Nighthawk
Jamaican Poorwill
How to Tell Them Apart
Lesser Nighthawk
Brown and buff mottled above; buff-white below with brown barring; white throat in male; white wing bar closer to wingtip than in Common Nighthawk; buff tail band. Female with buff …
Jamaican Poorwill
Brown and rufous mottled above with dark vermiculations; pale buff below with dark barring; white throat patch in male; buff and dark barred tail; no white wing patches. Closely resembles …
About These Birds
Lesser Nighthawk
A small Caprimulgidae nighthawk (~50 g) of deserts, semi-arid scrub, and open woodland from the southwestern United States to Peru and Brazil. Brown-and-buff patterned; males have a white throat bar. Low, buoyant flight close to the ground at dusk. Hunts insects aerially. Migratory; Least Concern.
Jamaican Poorwill
A medium Caprimulgidae poorwill (~55 g) endemic to Jamaica; possibly extinct or extremely rare. Last confirmed record in 1860; reported subsequently but never verified. Inhabited dry limestone scrub forest. Cryptic mottled plumage. Presumed nocturnal insectivore. Not currently evaluated by IUCN.