Their toe claws provide such a powerful grip they can hang on with one foot while feeding with the other! Slicing the rind with their teeth, they extract the fruit with their long tongue, which is also used to lap up the juices.
The thumb claw is used as a hook to help them move along branches. Males also use it to settle turf wars. Highly territorial by nature, they communicate ownership by spreading their wings, growling, or making hostile noises.