The overhanging roof and extensions of the entrance hole creates a defense against predators. Note that there is also no perch, this stops predators from sitting and reaching in. The birds can easily enter the bird box without the perch so this isn't a problem. The birds nesting inside are guaranteed safety.
Build a chickadee birdhouse! The two most numerous chickadee species in North America are the black-capped chickadee found primarily throughout the northern U. and Canada, and the Carolina chickadee native to the southeast U. Both birds have a distinc