West Mexican Chachalaca vs Spix's Guan
Ortalis poliocephala مقارنةً بـ Penelope jacquacu
Side-by-Side Comparison
| السمة | West Mexican Chachalaca | Spix's Guan |
|---|---|---|
| الاسم العلمي | Ortalis poliocephala | Penelope jacquacu |
| الرتبة | Galliformes | Galliformes |
| الفصيلة | Cracidae | Cracidae |
| حالة الحفاظ | Least Concern | Least Concern |
| الطول | — | — |
| طول الجناح | 52,0 cm (20.5 in) | 59,3 cm (23.3 in) |
| الوزن | 760,0 g (26.81 oz) | 1469,5 g (51.84 oz) |
| النظام الغذائي | Frugivorous; eats fruits, berries, seeds, and leaves in West Mexican scrub and forest edges. Also … | Frugivorous; eats fruits, berries, seeds, and leaves in Amazonian lowland forests. Forages in canopy and … |
| عدد البيض في الوضع | 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.
Spix's Guan
Produces a loud, resonant honking cackle; wing-whirring display is vigorous. Calls are deeper and louder than smaller guans; echoes through Amazonian terra firme canopy.
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.
Spix's Guan
Resident in the Amazon Basin from Colombia and Venezuela south to Bolivia and Brazil. Found in lowland rainforest, especially along rivers.
حالة الحفاظ
West Mexican Chachalaca
Spix's 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 …
Spix's Guan
Predominantly dark olive-brown; bare reddish throat wattle; neck and breast streaked white; lower belly and flanks rufous; wing coverts with fine pale edging; tail long, dark brown.
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.
Spix's Guan
A large cracid (~1.5 kg) of family Cracidae, with olive-brown plumage and a red wattle. Inhabits lowland tropical rainforests across Amazonia in Brazil, Peru, Ecuador, Colombia, Bolivia, and Venezuela. Arboreal, feeding heavily on fruits, seeds, and leaves in the canopy. Least Concern; widespread and relatively common in undisturbed Amazonian forest.