Enjoy the beauty, songs and behavior of your very own bluebird family in your own backyard. As our environment becomes more dangerous each year, it becomes increasingly important to provide housing for bluebirds to birth and raise their young. Heath bluebird houses have been a long-time favorite of bluebird enthusiasts, and have graced America's backyard for decades. Our most popular model now has easy front opening for cleaning. 1-1/2-inch entrance hole. Instructions for use: choose a site in open country with scattered trees. Mount the house 5-6 ft above the ground on a pole, and ensure that the entrance hole does not face the direction of storms. Spacing the houses 200 ft apart will prevent any territorial conflict. Leave your heath bluebird house up all year long for seasons of enjoyment.