Identify each adaptation as structural or behavioral adaptations. 1.monkeys have a prehensile tail that allows them to grab and hold onto tree branches. 2.moose make mating calls to locate potential mates. 3.whales are covered in a thick layer of blubber, insulating their bodies in cold ocean waters. 4.humans have five toes on each foot to them maintain balance. 5.many birds migrate south for the winter in search of food.