West Mexican Chachalaca vs Sira Curassow
Ortalis poliocephala comparado com Pauxi koepckeae
Side-by-Side Comparison
| Atributo | West Mexican Chachalaca | Sira Curassow |
|---|---|---|
| Nome científico | Ortalis poliocephala | Pauxi koepckeae |
| Ordem | Galliformes | Galliformes |
| Família | Cracidae | Cracidae |
| Estado de conservação | Least Concern | Critically Endangered |
| Comprimento | — | — |
| Envergadura | 52,0 cm (20.5 in) | 93,6 cm (36.9 in) |
| Peso | 760,0 g (26.81 oz) | 3745,0 g (132.10 oz) |
| Dieta | Frugivorous; eats fruits, berries, seeds, and leaves in West Mexican scrub and forest edges. Also … | Eats large seeds, fruits, and invertebrates in Peruvian foothill forests. Critically endangered; diet poorly documented. |
| Tamanho da postura | 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.
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
West Mexican Chachalaca
Endemic to the Pacific coast of Mexico from Sonora south to Jalisco. Found in tropical dry forest and thorn scrub.
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.
Estado de conservação
West Mexican Chachalaca
Sira Curassow
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 …
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
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.
Sira Curassow
A large cracid (~3.7 kg) of family Cracidae, with a stout turquoise casque and black-and-white plumage. Restricted to the Sira mountains of central Peru. Inhabits humid montane and foothill forests at 600–1,600 m elevation. Forages on the forest floor for fruits and seeds. Critically Endangered with an extremely small range; threatened by logging, agricultural conversion, and hunting.