More often than not, when people erect a bird-nesting box in their Georgia backyard they do so in hopes it will be used by eastern bluebirds. The truth of the matter is bluebirds do not nest in every backyard. For example, they typically refrain from nesting in cities. They also avoid wooded areas. They much prefer nesting in more open sites often found at the fringes of urban areas, and the wide-open spaces of the rural countryside.
However, if your yard is characterized by scattered trees or the presence of nearby woodland, erecting a box there might be just perfect for a pair of Carolina chickadees.
If you decide to construct a Carolina chickadee nesting box, you can build it to the specifications of a typical bluebird box with one exception—drill the entrance hole 1 1/8-inches in diameter.
If, on the other hand, you want to buy a Carolina chickadee nesting box, you will probably find it difficult to find one. This problem can be easily remedied by purchasing a standard bluebird box and installing an inexpensive 1 1/8’inch hole guard over the traditional 1 1/2-inch entrance hole cut in the box.
This will do a couple of things. First, it will prevent larger cavity nesting birds from nesting in the box. It will also prevent squirrels from destroying the box by trying gain access to it by enlarging the entrance hole.