How do woodpeckers find insects inside trees?

Woodpeckers find insects inside trees by using their strong beaks to tap on the bark, listening for hollow or resonant sounds that indicate insect tunnels. Their keen hearing helps them detect movement or sounds made by insects under the surface. Once they locate their prey, they use their sharp beaks to drill into the wood and their long, sticky tongues to extract the insects. Their tongues are specially adapted, with barbs or a sticky coating to grip the prey. This feeding strategy allows them to access food sources that other birds cannot reach, making them highly specialised forest foragers.