Why the red face, bald uakari monkey? Are you hot? Are you embarrassed that your Amazonian treemate isn't wearing any clothes? Or are you sick? A new study in Royal Society Open Science opts for ...

From pygmy marmosets to lowland gorillas, the world of primates encompasses a diverse and colorful range of creatures. There's no better example of this than the bald-headed uakari (Cacajao calvus), a ...

Hairless and red-faced may not be typical adjectives to describe good health, but healthy bald uakari monkeys possess both of these qualities. These primates are mostly known for their bright red ...

Bald uakaris are small South American primates with striking bald heads and bright red faces. (They may be attractive to mates because malarial or sick animals develop pale faces.) They have a long, ...