Great Curassow
Crax rubra
Very large game bird of tropical forest, eliminated from most areas by hunting. Rarely found except in protected parks or very remote areas. Usually seen on the forest floor, singly or in small groups, but also feeds in trees. Males often sing from high in canopy: song is a very low-pitched, almost subliminal, booming sound. Not likely to be confused if seen well. Both sexes have distinctive curly crest. Female plumage is variable: some have bold barring, others have darker and mostly unbarred plumage.
Identification
At 78–100 cm (31–39 in) in length and 3.1–4.8 kg (6.8–10.6 lb) in weight, this is a very large cracid. Females are somewhat smaller than males. It is the most massive and heavy species in the family but its length is matched by a few other cracids. Three other species of curassow (the northern helmeted, the southern helmeted, and the black are all around the same average length as the great curassow. In this species, standard measurements are as follows: the wing chord is 36 to 42.4 cm (14.2 to 16.7 in), the tail is 29 to 38 cm (11 to 15 in) and the tarsus is 9.4 to 12 cm (3.7 to 4.7 in). They have the largest mean standard measurements in the family, other than tail length.<p>The male is black with a curly crest, a white belly, and a yellow knob on its bill. There are three morphs of female great curassows: barred morph females with barred neck, mantle, wings and tail; rufous morph with an overall reddish brown plumage and a barred tail; and dark morph female with a blackish neck, mantle and tail (the tail often faintly vermiculated), and some barring to the wings. In most regions only one or two morphs occur, and females showing a level of intermediacy between these morphs are known (e.g. resembling rufous morph, but with black neck and faint vermiculations to the wings).<p>This species has a similar voice to several other curassows, its call consisting of a "peculiar" lingering whistle.
Taxonomy
Genus: Crax; Family: Cracidae; Order: Galliformes.
- Scientific name
- Crax rubra
- Authority
- Linnaeus, 1758
- Order
- Galliformes
- Family
- Cracidae
- Genus
- Crax
Range and habitat
- Migration
- Resident species
Behavior
Migration pattern: Resident species.
Conservation
Population trend: declining.
- Population trend
- declining
Photos
Distribution
Bird Calls
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