Nest boxes can be substi- tute homes for cavity dwelling species that typically build their nests in tree trunks- like woodpeckers, squirrels, raccoons, some songbirds, and owls.
How do you keep squirrels out of bird boxes?
Squirrel-Proof Your Birdhouse
- Add a metal ring around the entrance. A squirrel will not be able to chew through the metal, and this will discourage them or even make it incapable for them to stay in your birdhouse.
- Extend the birdhouse roof four or five extra inches.
Do squirrels use bird houses?
Squirrels primarily enter birdhouses to find the food inside. Squirrels are after seeds, nuts and other vegetarian food items. Squirrels are not carnivorous, but that doesn't mean they won't kill nesting birds or put them at risk. The most pressing risk from squirrels is when they enlarge the entrance hole to the box.
