Buff-collared Nightjar vs Spotted Nightjar
Antrostomus ridgwayi comparado con Eurostopodus argus
Side-by-Side Comparison
| Atributo | Buff-collared Nightjar | Spotted Nightjar |
|---|---|---|
| Nombre científico | Antrostomus ridgwayi | Eurostopodus argus |
| Orden | Caprimulgiformes | Caprimulgiformes |
| Familia | Caprimulgidae | Caprimulgidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 30,0 cm (11.8 in) | 42,7 cm (16.8 in) |
| Peso | 49,5 g (1.75 oz) | 102,5 g (3.62 oz) |
| Dieta | Catches moths and flying insects at night over arid scrub and rocky canyons of Mexico … | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … |
| Tamaño de la puesta | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Buff-collared Nightjar only
Ninguno
Spotted Nightjar only
Song & Call Comparison
Buff-collared Nightjar
Rapid, staccato 'cuk-cuk-cuk-WEEEER'; accelerating series ending in long slurred note; carries through arid Mexican canyons; distinctive rapid chucking intro
Spotted Nightjar
Loud churring 'good-lord-deliver-us' repeated at dusk; melodic bubbling quality; also emits hollow 'cow-cow-cow' series and soft frog-like croaking
Geographic Range & Migration
Buff-collared Nightjar
Breeds in arid scrub and dry woodland in southwestern USA (Arizona, New Mexico) and western Mexico; winters south to Honduras.
Spotted Nightjar
Resident and partial migrant of open woodland, grassland, and scrub across mainland Australia and migrating to New Guinea and Indonesia in winter.
Estado de conservación
Buff-collared Nightjar
Spotted Nightjar
How to Tell Them Apart
Buff-collared Nightjar
Brown and grey mottled with dark vermiculations; buff-orange collar across hindneck diagnostic; white gorget in male; pale buff underparts with dark barring; white outer tail spots in male; arid southwest …
Spotted Nightjar
Cryptically mottled grey-brown, rufous, and black with intricate vermiculations; distinctive large white spots on wing coverts; white throat patch; no white in wings or tail. Sexes similar with slight pattern …
About These Birds
Buff-collared Nightjar
A medium-small Caprimulgidae nightjar (~50 g) of arid scrub, rocky canyon slopes, and thorn forest from the southwestern United States to Nicaragua. A buff nuchal collar distinguishes it from similar species. Calls with a loud 'cuck-cuck-cuck-coo-chee' phrase. Feeds on moths and beetles. Least Concern.
Spotted Nightjar
Chotacabras de Argos, 28-30 cm. Pardo y negro moteado, cola punteada, ojos grandes. Habita bosques y matorrales abiertos de Australia. Nocturno. Insectívoro. Preocupación menor.