West Mexican Chachalaca vs Rusty-margined Guan
Ortalis poliocephala مقارنةً بـ Penelope superciliaris
Side-by-Side Comparison
| السمة | West Mexican Chachalaca | Rusty-margined Guan |
|---|---|---|
| الاسم العلمي | Ortalis poliocephala | Penelope superciliaris |
| الرتبة | Galliformes | Galliformes |
| الفصيلة | Cracidae | Cracidae |
| حالة الحفاظ | Least Concern | Near Threatened |
| الطول | — | — |
| طول الجناح | 52,0 cm (20.5 in) | 49,7 cm (19.6 in) |
| الوزن | 760,0 g (26.81 oz) | 950,0 g (33.51 oz) |
| النظام الغذائي | Frugivorous; eats fruits, berries, seeds, and leaves in West Mexican scrub and forest edges. Also … | Eats fruits, berries, seeds, leaves, and small invertebrates in South American Atlantic and Cerrado forest … |
| عدد البيض في الوضع | 2-3 | 3 |
| Population Trend | — | — |
Habitat Comparison
الموائل المشتركة
West Mexican Chachalaca only
بلا
Rusty-margined Guan only
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.
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
West Mexican Chachalaca
Endemic to the Pacific coast of Mexico from Sonora south to Jalisco. Found in tropical dry forest and thorn scrub.
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.
حالة الحفاظ
West Mexican Chachalaca
Rusty-margined 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 …
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
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.
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.