The research group from the University of Costa Rica (UCR), led by Dr. Óscar M. Chaves, has been investigating the unusual coloration in howler monkeys (Alouatta palliata) from 2021 to 2023. Typically ...

A new trend is catching on among bored young male capuchins: kidnapping baby howler monkeys, in what scientists say is the first time animals have been recorded stealing another species’ infants for ...

Add Yahoo as a preferred source to see more of our stories on Google. Here a white-faced capuchin monkey perches on a tree branch in Manuel Antonio National Park in Costa Rica. A group from the same ...

Quiet on the tee? The howler monkeys weren’t having it. Hidden in the canopy above me, the loudest mammals on the planet were holding forth in full-throated violation of golf etiquette: primates with ...

After a fallen tree cleared part of the rainforest on the Osa Peninsula, two researchers erected a circular plan with an airy viewing deck and oculus framing the canopy. Houses We Love: Every day we ...

“When I was a child living on the southern Pacific coast of Costa Rica, my parents would take me to see golden-mantled howler monkeys (Alouatta palliata palliata) in the forest most weekends. Howler ...