This bluebird house has a plexi glass observation window. When you open the side door you can observe the nest without danger of the eggs or young bluebirds falling out.

This bluebird house is made out of thick pine. It is constructed with screws, nails and glue. It has a rough interior, a 1 1/2'' entrance hole, ventilation and drainage holes, a hanging bracket, a side clean out door and a peaked roof. This house has a 4'' x 4'' floor, recommended for Easter Bluebird nest-boxes.
This house has a wooden predator guard that is easily replaced if damaged by a squirrel etc. We recommend a predator guard on Bluebird houses, for the added protection because of the extra depth and some believe bluebirds prefer a deeper entrance hole.