Lesser Nighthawk vs Ladder-tailed Nightjar
Chordeiles acutipennis so với Hydropsalis climacocerca
Side-by-Side Comparison
| Thuộc Tính | Lesser Nighthawk | Ladder-tailed Nightjar |
|---|---|---|
| Tên Khoa Học | Chordeiles acutipennis | Hydropsalis climacocerca |
| 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) | 29,9 cm (11.8 in) |
| Khối Lượng | 50,0 g (1.76 oz) | 48,0 g (1.69 oz) |
| Chế Độ Ăn | Hawks small flying insects at dusk and dawn over North and South American arid scrub … | Nocturnal aerial insectivore; hawks insects over Amazonian river margins and forest clearings. |
| Số Trứng | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
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
Ladder-tailed Nightjar
Resonant churring trill over Amazonian rivers; 'churr-churr' with hollow quality; calls from riverside sandbars and beaches at dusk; distinctive riverside habitat singer
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.
Ladder-tailed Nightjar
Resident of sandy riverbanks, open woodland, and savanna in the Amazon basin from Colombia and Peru south to Bolivia and central Brazil.
Tình Trạng Bảo Tồn
Lesser Nighthawk
Ladder-tailed Nightjar
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 …
Ladder-tailed Nightjar
Male brown and buff mottled above; white throat; graduated tail with white ladder pattern on inner webs of outer rectrices diagnostic; white wing patches. Female has buff throat; tail barred …
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.
Ladder-tailed Nightjar
A small Caprimulgidae nightjar (~48 g) of rivers, oxbow lakes, and riverine forest edges throughout the Amazon Basin. Males possess white-banded, step-like outer tail feathers giving a ladder appearance. Roosts on branches and sandy banks near water. Feeds on insects at night. Least Concern.