Grey-headed Chachalaca vs Rusty-margined Guan
Ortalis cinereiceps 对比 Penelope superciliaris
Side-by-Side Comparison
| 属性 | Grey-headed Chachalaca | Rusty-margined Guan |
|---|---|---|
| 学名 | Ortalis cinereiceps | Penelope superciliaris |
| 目 | Galliformes | Galliformes |
| 科 | Cracidae | Cracidae |
| 保护状况 | Least Concern | Near Threatened |
| 体长 | — | — |
| 翼展 | 41.1 cm (16.2 in) | 49.7 cm (19.6 in) |
| 体重 | 566.5 g (19.98 oz) | 950.0 g (33.51 oz) |
| 食性 | Frugivorous and folivorous; eats fruits, berries, leaves, and buds in Central American forest edges and … | Eats fruits, berries, seeds, leaves, and small invertebrates in South American Atlantic and Cerrado forest … |
| 产卵数 | 3 | 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.
Rusty-margined Guan
Emits a loud, resonant honking cackle and loud wing-whirring. Calls are similar to Spix's Guan; the wing-whirr display is standard for the genus in South American forest.
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.
Rusty-margined Guan
Resident in Brazil from Bahia south to Rio Grande do Sul and in adjacent Paraguay and Argentina. Found in Atlantic Forest and gallery woodland.
保护状况
Grey-headed Chachalaca
Rusty-margined Guan
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.
Rusty-margined Guan
Dark brown above; prominent pale buff-white supercilium; bare red throat; breast streaked white; wing coverts and secondaries edged rusty-rufous; lower belly rufous-chestnut; tail dark.
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.
Rusty-margined Guan
A medium-sized cracid (~950 g) of family Cracidae, with rusty-brown wing margins and a red wattle. Inhabits Atlantic Forest, cerrado woodland edges, and humid forests in eastern and central Brazil and bordering countries. Feeds on fruits, leaves, and seeds in forest canopy. Near Threatened due to Atlantic Forest loss and hunting; one of the most common guans in its range.