Lesser Nighthawk vs Band-tailed Nighthawk
Chordeiles acutipennis so với Nyctiprogne leucopyga
Side-by-Side Comparison
| Thuộc Tính | Lesser Nighthawk | Band-tailed Nighthawk |
|---|---|---|
| Tên Khoa Học | Chordeiles acutipennis | Nyctiprogne leucopyga |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Caprimulgidae | Caprimulgidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 33,0 cm (13.0 in) | 27,2 cm (10.7 in) |
| Khối Lượng | 50,0 g (1.76 oz) | 24,7 g (0.87 oz) |
| Chế Độ Ăn | Hawks small flying insects at dusk and dawn over North and South American arid scrub … | Hawks small to medium flying insects over South American rivers, lakes, and surrounding savanna at … |
| Số Trứng | 1-2 | -- |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Không
Lesser Nighthawk 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
Band-tailed Nighthawk
Sharp, high 'chip-chip' notes; thin buzzy trills; calls over rivers at dusk; small size produces high-pitched thin vocalizations; often calls in flight
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.
Band-tailed Nighthawk
Resident and nomadic along large rivers and in open savanna in tropical South America from Venezuela south to Bolivia, Brazil, and northern Argentina.
Tình Trạng Bảo Tồn
Lesser Nighthawk
Band-tailed Nighthawk
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 …
Band-tailed Nighthawk
Small; dark brown above with buff speckles; pale buff below with dark brown barring; white tail band diagnostic at species level; white throat patch in male; no white wing bar; …
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.
Band-tailed Nighthawk
A tiny Caprimulgidae nighthawk (~25 g) of tropical river margins and sandbar beaches in the Amazon and Orinoco basins. Blackish brown with a white rump band; very small. Roosts on bare sand and low branches near water. Feeds on insects aerially at low elevations above rivers at dusk. Least Concern.