The house should also have adequate ventilation and a perch on top. Martins can be recognized as fairly large garden birds. They are a dark purple with grayish wing feathers. They are accustomed to people and will probably join you in your garden. The Bat House Bats are an often forgotten garden friend.
Bats eat thousands of insects a day, actually at night.
By including a bat house in your garden, you encourage the bats to stay. The inside of a bat house is divided vertically into narrow compartments. The house should be made of a rough, unstained wood on the inside to allow the bats to get a good grip. A bat house should be placed in a cool open area, with ample shade during the day and near a good source of water.