Bats are important members of our ecosystem – even in urban and suburban areas. Most mainland U.S . bat species are brown and small in size – like the size of your thumb to the size of your hand. And they are insect eaters. They are pretty abundant, especially if your neighborhood or city has lots of trees, because they live in forest habitats. In urban and suburban areas they live parks and cemeteries – okay, that’s a little Halloween humor; but think about it, cemeteries are just like parks – open green spaces and lots of trees. Bats roost - hang and sleep - up-side-down on trees, on the sides of brick buildings, under the overhang of buildings or even on the ground nestled under the leaf litter. Summer evenings they awake from their sleep and gobble up thousands of mosquitoes, gnats, and other flying insects. They are important urban neighbors.
Right now is a transitional time. Autumn is the breeding season and they hibernate over winter. But…haha, females are NOT pregnant during hibernation. That would just be too energetically costly. No, they mate in the fall and store the sperm over winter. When they wake up some interesting physiology happens, allowing the still active and living sperm to travel and fertilize the female’s eggs in the spring. Amazing! Most bats have one, maybe two babies in the spring.
But you can still create a welcoming habitat for bats. Build a bat house: Info 1, Info 2. That way you might increase your chances of observing these animals and reducing the mosquitoes in your yard.