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Michigan Bat Species- Big Brown Bat & Little Brown Bat

Michigan brown bat
brown bat

9 Species of Bats in Michigan

Big Brown Bat

Little Brown Bat

Eastern Red Bat

The Hoary Bat

Tri-Colored Bat

Indiana Bat

Evening Bat

Silvered Haired Bat

Northern Long-eared Bat

Bats feast exclusively on insects, primarily on mosquitoes. There are many types of bats in Michigan and the North East part of the United States, but the big and little brown bat are the bats you'll find in your attic and in your living quarters. The brown bat is one of the most common bats found in and near buildings and residential homes. These bats will consume nearly 3 times their body weight in insects per night. Eating around 6,000 insects a night. Bats are not mice with wings. They are mammals just like you and I. In fact, they are the only flying mammal in existence. Bats can fit through some of the smallest openings, just around a 1/2". They have a vertebrate, but their body is made up of primarily cartilage. What appear to be wings are their hands with webbing in between their fingers. When bats enter your home or attic they cannot fly right through a small opening like a bird, they have to land first on a landing pad usually a 90 or 45-degree surface and crawl in.

Most of the bats when in flight aren't seeing where there flying but they move by high-frequency sound waves, helping them find food and move out of the way of structures. This technique is called echolocation. These sounds cannot be heard by humans, but bats do give out some noises that indicate they are nearby possibly in your home or attic. You will hear scratching, crawling under insulation, or flying through your attic. Also, you will often here a chirping sound which is distinct from any other animal noise you will hear. Once in your attic and walls bats will leave excrement, their droppings otherwise known as bat guano. With enough build-up of bat guano there will be a smell like you never smelt before. Once you smell it you'll never forget it. This guano can also contain bacteria and fungi which can be harmful to the humane respiratory system. Although bats can cause damage to your home and health they can also provide many benefits to our environment. Bats control the insect population and prevent the spread of West Nile disease

Just like any wild animal bats have potential to carry rabies. Although bats may carry rabies it's a small percentage of all bats that have been tested come back positive. Even though the percentage is low you should take all precautionary measures to have the bat tested if in your home or contact your local physician or health department. For more information on bats, visit batcon.org

Common Signs You Have Bats Nesting in the Attic

  • You hear scratching in the ceiling and walls at night.

  • You hear chirping in the attic.

  • You have had a bat in the house.

  • You see bats flying around your home.

  •  You see bats flying out of a hole on your roof.

  • You see dirt marks on the louvers of your gable vent.

  • You have droppings on your front porch.