Commonly known as the red-tailed monkey, Schmidt’s guenon, or the black-cheeked, white-nosed monkey, this primate species (Cercopithecus ascanius) ranges across much of Central Africa. This male, named Kinky for the bend in the end of his tail, was photographed in the Issa Valley, part of the Ugalla Region, Tanzania. He was one of a couple adult males in a large group that was being followed to understand how these typically forest-dwelling monkeys utilize the primarily woodland habitat of the Issa Valley.

[Photo and caption by Alexander Vining]