Nocturnal Curassow vs Grey-headed Chachalaca
Nothocrax urumutum 比較対象 Ortalis cinereiceps
Side-by-Side Comparison
| 属性 | Nocturnal Curassow | Grey-headed Chachalaca |
|---|---|---|
| 学名 | Nothocrax urumutum | Ortalis cinereiceps |
| 目 | Galliformes | Galliformes |
| 科 | Cracidae | Cracidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 56.1 cm (22.1 in) | 41.1 cm (16.2 in) |
| 体重 | 1368.0 g (48.25 oz) | 566.5 g (19.98 oz) |
| 食性 | Frugivorous; eats fruits, seeds, and small invertebrates in Amazonian lowland forests. Nocturnal; rarely observed foraging. | Frugivorous and folivorous; eats fruits, berries, leaves, and buds in Central American forest edges and … |
| 一腹卵数 | 1-2 | 3 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Nocturnal Curassow
Produces a loud, far-carrying booming call at night; calls are resonant and owl-like. This nocturnal curassow's deep, resonant booming is heard after dark in western Amazonian forest.
Grey-headed Chachalaca
Produces a loud, raucous cha-cha-lac chorus at dawn; individual notes are hoarser and lower than Plain Chachalaca. Groups call antiphonally from treetops in Central American forest edge.
Geographic Range & Migration
Nocturnal Curassow
Resident in the western Amazon Basin in Colombia, Venezuela, Ecuador, Peru, and Brazil. Found in lowland terra firme rainforest.
Grey-headed Chachalaca
Resident from Honduras south through Central America to Panama and northwestern Colombia. Found in humid forest and dense vegetation.
保全状況
Nocturnal Curassow
Grey-headed Chachalaca
How to Tell Them Apart
Nocturnal Curassow
Chestnut-brown above with blackish scaling; head and neck dark with small black crest tipped rufous; face bare red-orange; underparts pale buff barred chestnut; tail chestnut broadly banded black.
Grey-headed Chachalaca
Olive-brown body; head and neck distinctly grey contrasting with brownish back; bare reddish throat skin; underparts pale buff-grey; tail graduated, brown with paler tips on outer feathers.
About These Birds
Nocturnal Curassow
A medium-large cracid (~1.4 kg) of family Cracidae, the only curassow known for crepuscular and nocturnal activity. Has reddish-brown barred plumage and a small crest. Inhabits humid lowland rainforest in the western Amazon basin in Colombia, Ecuador, Peru, and Brazil. Feeds on fruits and invertebrates. Least Concern; secretive behavior and dense forest habitat provide natural protection.
Grey-headed Chachalaca
A medium-sized cracid (~565 g) of family Cracidae, with a distinctive grey head and olive-brown body. Inhabits humid tropical forests, forest edges, and scrublands from Honduras south to northwestern Colombia. Forages in groups for fruits, berries, leaves, and insects in the understory and canopy. Least Concern; common throughout its range in Central American lowlands.