West Mexican Chachalaca vs White-browed Guan
Ortalis poliocephala 比較対象 Penelope jacucaca
Side-by-Side Comparison
| 属性 | West Mexican Chachalaca | White-browed Guan |
|---|---|---|
| 学名 | Ortalis poliocephala | Penelope jacucaca |
| 目 | Galliformes | Galliformes |
| 科 | Cracidae | Cracidae |
| 保全状況 | Least Concern | Vulnerable |
| 体長 | — | — |
| 翼開長 | 52.0 cm (20.5 in) | 56.1 cm (22.1 in) |
| 体重 | 760.0 g (26.81 oz) | 1438.0 g (50.72 oz) |
| 食性 | Frugivorous; eats fruits, berries, seeds, and leaves in West Mexican scrub and forest edges. Also … | Eats fruits, berries, seeds, and leaves in Brazilian caatinga dry forests. Vulnerable; forages in canopy … |
| 一腹卵数 | 2-3 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
West Mexican Chachalaca
Emits a loud, raucous chachalaca chorus; individual calls are slightly lower than Plain Chachalaca. Dawn choruses boom across Mexico's Pacific slope thornscrub and tropical dry forest.
White-browed Guan
Emits a loud, resonant honking cackle and wing-whirring display. Calls carry through Caatinga and dry Brazilian forest; one of the more arid-adapted Penelope guans.
Geographic Range & Migration
West Mexican Chachalaca
Endemic to the Pacific coast of Mexico from Sonora south to Jalisco. Found in tropical dry forest and thorn scrub.
White-browed Guan
Endemic to the caatinga of northeastern Brazil in Pernambuco, Alagoas, Bahia, and Piauí. Found in dry scrubland.
保全状況
West Mexican Chachalaca
White-browed Guan
How to Tell Them Apart
West Mexican Chachalaca
Olive-brown above with greyish head; bare reddish throat skin; underparts pale grey with buff-olive flanks; tail long and dark brown with white tips on outer feathers. Overall paler than eastern …
White-browed Guan
Dark brownish-black; distinctive broad white supercilium above bare red facial skin; throat wattled red; breast finely streaked white; lower belly rufous-chestnut; tail long and dark.
About These Birds
West Mexican Chachalaca
A large chachalaca (~760 g) of family Cracidae, with a grey head and brownish body. Endemic to Mexico, inhabiting tropical dry and semi-deciduous forests of the Pacific coast from Jalisco to Oaxaca. Forages in groups for fruits, leaves, and seeds in forest canopy and understory. Least Concern; well adapted to secondary growth and forest edges throughout its restricted Mexican range.
White-browed Guan
ブラジル北東部の半乾燥低木林（カアチンガ）に特有のグアンで、乾燥した環境への適応が際立つ。絶滅危惧種に指定されており個体数が少ない。