Most birders use the terms nape and hindneck interchangeably, but there are differences between the two and how these different parts of a bird are classified. In general, the nape is a shorter section of the back of the neck, just below the crown.
They are arboreal creatures, spending most of their time in the treetops foraging for food, and rarely descend to the forest floor. Howler monkeys are the largest of all New World monkeys and have a lifespan of seven to fifteen years. Habitat: Mantled howler monkeys can be found in the canopies of both lowland and montane rainforests. They are commonly heard long before they are seen searching for leaves in the treetops. A troop of howler monkeys usually consists of eight to twelve females, three or four dominant males and several young.
Howler monkeys primarily consume leaves which form bulk of their diet. Howlers are also known to feed on fruits and flowers, buds, nuts, and shells. They can become aggressive towards each other while feeding on wild figs and a single troop must have a range large enough to cover large quantity of wild fig trees.