Heinrich's Nightjar vs White-tailed Nightjar
Eurostopodus diabolicus comparado com Hydropsalis cayennensis
Side-by-Side Comparison
| Atributo | Heinrich's Nightjar | White-tailed Nightjar |
|---|---|---|
| Nome científico | Eurostopodus diabolicus | Hydropsalis cayennensis |
| Ordem | Caprimulgiformes | Caprimulgiformes |
| Família | Caprimulgidae | Caprimulgidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 39,9 cm (15.7 in) | 27,3 cm (10.7 in) |
| Peso | 104,0 g (3.67 oz) | 35,75 g (1.26 oz) |
| Dieta | Nocturnal aerial insectivore; catches moths and beetles in flight over Sulawesi forest; poorly known. | Aerial insectivore; catches moths, beetles, and flying insects at night over South American open and … |
| Tamanho da postura | 1 | 2 |
| Population Trend | — | — |
Habitat Comparison
Habitats partilhados
Nenhum
Heinrich's Nightjar only
White-tailed Nightjar only
Song & Call Comparison
Heinrich's Nightjar
Haunting, hollow 'ku-WOO' repeated rhythmically; deep resonant quality; distinctive mournful whistle carrying through Sulawesi forest at night
White-tailed Nightjar
Rapid, whirring trill; 'churrrr' repeated with nasal quality; calls from open savanna and grassland at dusk; alarm a sharp bark; males display low over ground
Geographic Range & Migration
Heinrich's Nightjar
Endemic to Sulawesi, Indonesia; resident of montane forest; extremely rare and poorly known, with very few records.
White-tailed Nightjar
Resident of open savanna and forest edge from Costa Rica through Colombia and Venezuela to the Guianas and northern Brazil; also Caribbean islands.
Estado de conservação
Heinrich's Nightjar
White-tailed Nightjar
How to Tell Them Apart
Heinrich's Nightjar
Rufous-brown and dark brown mottled with buff vermiculations; large pale buff throat patch; pale buff supercilium; no white wing markings; tail darkly barred brown and buff. Poorly known; Sulawesi endemic.
White-tailed Nightjar
Male brown and grey mottled; white outer tail feathers diagnostic; white throat; small white wing spots; female has buff outer tail feathers and lacks white wing spots; scrubby savanna habitats.
About These Birds
Heinrich's Nightjar
A medium Caprimulgidae nightjar (~104 g) endemic to the forest and forest-edge habitats of Sulawesi, Indonesia. Cryptically patterned brown-and-buff. Nocturnal insectivore; catches moths and beetles in aerial sallies. Little studied and rarely encountered in the field. Least Concern within its Sulawesi range.
White-tailed Nightjar
O bacurau-de-rabo-branco é um bacurau noturno sul-americano com cauda caracteristicamente branca nos machos, encontrado em savanas e áreas abertas da América do Sul.