Buff-collared Nightjar vs Spotted Nightjar
Antrostomus ridgwayi comparado com Eurostopodus argus
Side-by-Side Comparison
| Atributo | Buff-collared Nightjar | Spotted Nightjar |
|---|---|---|
| Nome científico | Antrostomus ridgwayi | Eurostopodus argus |
| Ordem | Caprimulgiformes | Caprimulgiformes |
| Família | Caprimulgidae | Caprimulgidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| 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 … |
| Tamanho da postura | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Habitats partilhados
Buff-collared Nightjar only
Nenhum
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 conservação
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
A medium Caprimulgidae nightjar (~103 g) of open woodland, spinifex grassland, and rocky ridges across mainland Australia. Intricately spotted and barred brown, grey, and buff. Cryptic by day on the ground among leaf litter. Crepuscular and nocturnal; feeds on flying insects caught in aerial pursuit. Least Concern.