Black Guan vs Rufous-vented Chachalaca
Chamaepetes unicolor เปรียบเทียบกับ Ortalis ruficauda
Side-by-Side Comparison
| คุณสมบัติ | Black Guan | Rufous-vented Chachalaca |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Chamaepetes unicolor | Ortalis ruficauda |
| อันดับ | Galliformes | Galliformes |
| วงศ์ตระกูล | Cracidae | Cracidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 58.1 cm (22.9 in) | 44.0 cm (17.3 in) |
| น้ำหนัก | 1135.0 g (40.04 oz) | 604.4 g (21.32 oz) |
| อาหาร | Eats fruits, berries, leaves, and small invertebrates in Costa Rican and Panamanian montane forests. Forages … | Eats fruits, berries, leaves, flowers, and small insects in Venezuelan forest edges, scrub, and coastal … |
| จำนวนไข่ | 2-3 | 3-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Black Guan
Produces a loud, harsh cackling call and wing-whirring. Calls carry through Costa Rican and Panamanian cloud forest; deep cackling notes are lower-pitched than many Penelope guans.
Rufous-vented Chachalaca
Produces a loud, raucous chachalaca chorus; individual notes are slightly harsher than Plain Chachalaca. Dawn choruses ring across Venezuelan and Trinidadian dry forest and forest edge.
Geographic Range & Migration
Black Guan
Endemic to the highlands of Costa Rica and western Panama at 1,600-3,000 m. Found in humid montane forest.
Rufous-vented Chachalaca
Resident in northern Venezuela and Trinidad. Found in dry forest, scrub, and woodland edges in lowland areas.
สถานะการอนุรักษ์
Black Guan
Rufous-vented Chachalaca
How to Tell Them Apart
Black Guan
Uniformly glossy black throughout; bare bright blue facial skin around eye; no wattle or white markings; legs dark grey. One of the most uniformly coloured cracids; blue periorbital skin is …
Rufous-vented Chachalaca
Olive-brown above; grey head; bare reddish throat; underparts buff-grey grading to rich rufous-cinnamon on vent and undertail coverts; tail dark brown with buff-tipped outer feathers.
About These Birds
Black Guan
A medium-large cracid (~1.1 kg) of family Cracidae, entirely sooty-black with blue facial skin. Endemic to montane cloud forests of Costa Rica and western Panama at 1,200–3,000 m elevation. Arboreal frugivore, feeding on berries and small fruits. Least Concern; restricted range but relatively common within Costa Rican Talamanca highlands and well represented in protected areas.
Rufous-vented Chachalaca
A medium-sized cracid (~605 g) of family Cracidae, with rufous undertail coverts and a bare red throat. Found in forest edges, thorn scrub, and deciduous woodland in Venezuela and Trinidad. Forages in groups for fruits, seeds, and leaves. Least Concern; a familiar bird in Venezuela, adapted to disturbed habitats and gardens as well as natural scrublands.