Brown Bat

Category: Birds

The Common Brown Bat is just like its name suggests: a small to medium sized brown bat. This bat inhabits most of North America, and researchers believe it to have the highest population of any bat species on the continent.

Brown Bat

Brown Bat

Scientific & Common Names

The scientific name for this bat is Myotis lucifugus, while the common name is simply the Brown Bat. It is also called the Little Brown Bat or Common Brown Bat.


The Common Brown Bat is the most prolific of all bat species, and can be found nearly everywhere. If you have bats in your attic or in your yard, chances are that they are Brown Bats. This bat can be found throughout North America, and has even been spotted in Alaska and Iceland, thanks to importation by humans.


The Common Brown Bat is very promiscuous and has no preference of one sex over the other. The female Brown Bat gives birth to one pup per year, typically between the months of May and July. The gestational period for the Common Brown Bat is between 50 and 60 days.


The Common Brown Bat has three types of roosts that it inhabits. The Common Brown Bat has one roost for daytime use, one for night use, and a third for hibernation activities. The Brown Bat travels by night and hunts for its meals. This bat feasts on insects; a favorite delicacy for the Brown Bat is the mosquito. As a result, the Brown Bat will usually make its roost near bodies of water so it can catch mosquitoes more easily.


The Common Brown Bat was first documented in 1831. It can be found throughout North America, to include Canada, the United States, and Mexico. The Common Brown Bat has a lifespan of six to seven years; however, some Brown Bats may live up to ten years in the wild.

Present Status

The Common Brown Bat is one of the most common types of bats. This bat is very prolific and is used by researchers to learn about all bats. This bat is not on any endangered species list at this time.