Callithrix flaviceps

The yellow-crowned marmoset (Callithrix flaviceps) is a species of marmoset endemic to Brazil.

Yellow-crowned marmosets eat fruits, nuts and other plant foods, as well as insects, spiders, frogs, small lizards and bird eggs. Some species collect food with their hands, but do not put it directly into their mouths, but pick it up with their mouths. They have sharp vision, followed by hearing and smell. They are active during the day and sleep in tree holes at night.

Yellow-crowned tamarins live in groups of 3 to 12 in a family. They are active and alert. When resting, they stick their bellies to the tree trunks, and sometimes use their sharp claws to pierce the bark to support their bodies. Both parents feed their young together, taking turns to carry them on their backs or in their arms. The gestation period is 130 to 160 days, and usually two pups are born per litter. The nursing period is 42 to 84 days.

Due to habitat destruction, only a few hundred remain.

Listed in the IUCN Red List of Threatened Species in 2019 ver 3.1 - Critically Endangered (CR).

Listed in Appendix I, Appendix II and Appendix III of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) 2019 Edition.

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It is mainly found in a relatively small area in southeastern Brazil. The yellow-headed marmoset lives in the upper canopy of tropical rainforests or tropical forest grasslands and rarely moves on the ground.

The yellow-headed tamarin has short canines and is generally 15 to 25 cm long, not including the 25 to 40 cm long tail. Its fur is dense, silky and smooth. The tamarin's head and ear fringe is light yellow, and its muzzle is white. The skin near its eyes is black.