Big Brown Bat


Actual Size: Body length of 4-5”, with a wingspan of 12-13”

Characteristics: Copper-colored fur with lighter belly fur. Small round ears that are black in color. Broad nose and black wings.

Habitat: Found in almost all habitats from deserts, meadows, cities, to forests and mountains. Will hibernate in caves and other buildings.


  • Distributed widely across Mississippi Gulf Coast.
  • Insectivorous and prefers to eat beetles over insects.
  • Found in all habitats from meadows and deserts to cities and mountains.

Big Brown Bats in The Mississippi Gulf Coast

The big brown bat is one of the bigger bat species and also likely the most widely dispersed throughout Mississippi Gulf Coast They are known to withstand conditions that other types of bats cannot, which is why they’re commonly found in cities and suburban environments alongside wooded areas. They prefer eating beetles over other insects, using their powerful jaws to chew through the beetles’ hard exoskeleton, however, they also eat moths, flies, wasps, and flying ants. Colonies range from 20 to 300 individuals and big brown bats can live a long time in the wild. That said, most die off during their first winter due to malnutrition throughout hibernation.

Big Brown Bat Habitat

Big brown bats have been found in a variety of habits including meadows, deserts, mountains, forests, suburban areas, and cities. They will hibernate in caves, mines, walls, attics, or other buildings. They enter into hibernation in November, often less than 50 miles away from their summer roosts. They hibernate in small groups and come out in the springtime.

Big Brown Bat Behaviors, Threats, or Dangers

The big brown bat is nocturnal and will roost in several places during the day. They eat a number of insects but prefer beetles and are significant predators of agricultural pests. The average life expectancy is a bit over 6 years. The main threat of big brown bats is the fact that they roost and hibernate in buildings. Especially in the winter, they will enter homes and buildings for warmth in your attic or walls. Big brown bats are carriers of disease and it’s important to exercise extreme caution if you come across one. If you notice a bat has made its way into your building, never approach it or attempt to handle it yourself. Always contact a professional wildlife control company.