Tawny-collared Nightjar vs Heinrich's Nightjar
Antrostomus salvini 比較対象 Eurostopodus diabolicus
Side-by-Side Comparison
| 属性 | Tawny-collared Nightjar | Heinrich's Nightjar |
|---|---|---|
| 学名 | Antrostomus salvini | Eurostopodus diabolicus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 33.8 cm (13.3 in) | 39.9 cm (15.7 in) |
| 体重 | 56.0 g (1.98 oz) | 104.0 g (3.67 oz) |
| 食性 | Aerial insectivore; hawks moths and beetles at night over Central American forest and forest edge. | Nocturnal aerial insectivore; catches moths and beetles in flight over Sulawesi forest; poorly known. |
| 一腹卵数 | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Tawny-collared Nightjar
Loud 'WHEEP' or 'weet' repeated at intervals; sharp, whistled call; carries through Mexican highland forest; higher-pitched than Chuck-will's-widow; distinctive sharp quality
Heinrich's Nightjar
Haunting, hollow 'ku-WOO' repeated rhythmically; deep resonant quality; distinctive mournful whistle carrying through Sulawesi forest at night
Geographic Range & Migration
Tawny-collared Nightjar
Resident of tropical dry forest and scrub in eastern Mexico (Veracruz, Oaxaca, Tabasco) and northern Central America.
Heinrich's Nightjar
Endemic to Sulawesi, Indonesia; resident of montane forest; extremely rare and poorly known, with very few records.
保全状況
Tawny-collared Nightjar
Heinrich's Nightjar
How to Tell Them Apart
Tawny-collared Nightjar
Brown and buff mottled above; distinctive tawny-buff collar encircling hindneck diagnostic; white gorget in male; pale buff underparts with dark barring; white outer tail spots in male; Mexican dry forests.
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.
About These Birds
Tawny-collared Nightjar
A medium-small Caprimulgidae nightjar (~56 g) of humid foothill and montane forest edges in northeastern Mexico, Guatemala, Belize, and Honduras. Named for its tawny hindneck collar. Brown-mottled plumage; males have white tail corners. Roosts on the ground; feeds nocturnally on insects. Least Concern.
Heinrich's Nightjar
スラウェシ島固有のヨタカで、体重104g。「悪魔のヨタカ」という名で知られる。