How do the unique characteristics help the aye-aye survive?

The aye-aye uses it's skinny middle finger to tap on wood to find hollow spots where insects and their larvae can be found. It listens with its sensitive, bat-like ears. This is a form of echolocation. Once the prey is located, the aye-aye uses its rodent-like front teeth to chew a hole into the tree, and then uses its skinny middle finger to dig out the prey.