blackback

The term "blackback" is used to describe young, adult male gorillas that have not yet developed the gray or silver hair on their backs that characterizes a "silverback". Gorillas are the largest of the apes and are closely related to humans, sharing a common ancestor about 10 million years ago. They inhabit tropical forests in equatorial Africa and are known for their robust build, black skin and hair, and powerful limbs. Gorillas live in family groups led by one or more silverback males, with blackbacks being younger males in the group. Their diet is primarily vegetarian, consisting of leaves, stalks, and fruits.123