Gibbons are a type of ape, just like bonobos, chimpanzees, gorillas, and orangutans. They are much smaller than other apes, which helps them move swiftly through the high tree canopies of their native evergreen forests in Cambodia and Vietnam. Gibbons communicate with each other with loud calls, especially around sunrise, with males and females often singing to each other in duet.
You can tell the age and sex of a gibbon by its color. Red-cheeked gibbons are born a buff-yellow color, then turn black when they are around 6 months old. Once they become adults, males keep their black fur, but females go back to being buff-yellow.
