Grey-headed Chachalaca vs Sira Curassow
Ortalis cinereiceps 比較対象 Pauxi koepckeae
Side-by-Side Comparison
| 属性 | Grey-headed Chachalaca | Sira Curassow |
|---|---|---|
| 学名 | Ortalis cinereiceps | Pauxi koepckeae |
| 目 | Galliformes | Galliformes |
| 科 | Cracidae | Cracidae |
| 保全状況 | Least Concern | Critically Endangered |
| 体長 | — | — |
| 翼開長 | 41.1 cm (16.2 in) | 93.6 cm (36.9 in) |
| 体重 | 566.5 g (19.98 oz) | 3745.0 g (132.10 oz) |
| 食性 | Frugivorous and folivorous; eats fruits, berries, leaves, and buds in Central American forest edges and … | Eats large seeds, fruits, and invertebrates in Peruvian foothill forests. Critically endangered; diet poorly documented. |
| 一腹卵数 | 3 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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.
Sira Curassow
Produces a deep, resonant booming call. Critically Endangered; calls are essentially unknown in the wild; captive birds give deep, resonant booming typical of Pauxi curassows.
Geographic Range & Migration
Grey-headed Chachalaca
Resident from Honduras south through Central America to Panama and northwestern Colombia. Found in humid forest and dense vegetation.
Sira Curassow
Endemic to the Sira Cordillera of central Peru in Ucayali and Huánuco at 600-1,400 m. Found in humid foothill forest. Critically endangered.
保全状況
Grey-headed Chachalaca
Sira Curassow
How to Tell Them Apart
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.
Sira Curassow
Glossy black overall; white lower belly; pale blue-grey conical casque on forehead similar to Horned Curassow; red bill and red legs. Extremely rare and poorly known; casque shape and large …
About These Birds
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.
Sira Curassow
ペルー固有のサケズドリで、アンデス山脈東斜面の雲霧林に生息する。球状の角盾が特徴的で、生息地の消失と狩猟により絶滅危惧種に指定されている。