Sexual dimorphism I
Examples of differences in the appearance of males and females of the same species of birds, mammals and insects (compare on the same photo).

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Crax fasciolata
Bare-faced Curassow
A pair.
Brasil, Mato Grosso, Transpantaneira.
8/27/2011
AS046'03-110827003'JJK























IUCN Red List: Vulnerable (VU).
The population of the species is declining quite rapidly due to hunting and the restriction of its habitat.