There are over 40 species of bats in North America which makes it a good chance that there are bats in your yard. Bats feed on insects and therefore keep the population of mosquitoes and other insects at bay.
You can find bats in high canopy protecting trees. You will see them at dawn or dusk because they are nocturnal creatures. Bats like to be near water because that is where the insect population thrives. Believe it or not, bats like lampposts and lights, since this is also an attraction for insects.
For bats to visit your yard they need food, water and housing. A source of water such as a pond or creek should be no more than 1/4 mile away. This attracts insects which will attract bats.
A bat house is an excellent way to keep bats around in your yard. Place the bat house at least 14 to 15 feet high to the south, south east. Bats like the sun and love the temperature of 85 degrees or more.
These simple steps are just some ways to help the bat population thrive.