The big brown bat (Eptesicus fuscus) is a species of vesper bat distributed widely throughout North America, the Caribbean, and the northern portion of South America. It was first …

The big brown bat is aptly named, since it is one of our largest bats and is uniformly brown on the upperparts, ranging from dark brown to cinnamon brown. The underparts are lighter colored …

Nov 2, 2017 · Big brown bats weigh between ½ and ¾ of an ounce and their wingspans range from 13 to 16 inches, with forearms > 1 ½ inches long. Their fur is long, tends to be oily, and …

The big brown bat, one of the most common and widespread bats in Massachusetts, is a powerful natural pest controller with a diet that includes beetles and stink bugs.

The big brown bat is found in virtually every American habitat ranging from timberline meadows to lowland deserts, though this species is most abundant in deciduous forest areas. It also is …

Big brown bats are fairly common and are not of any special conservation concern. Temperate North American bats are now threatened by a fungal disease called “white-nose syndrome.”

Turnbull NWR - Big Brown Bat A big brown bat caught in a mist net as part of a monitoring research project. Animals caught using this method are safely released back into the wild.

Big brown bats (Eptesicus fuscus) are considered "large" for an American bat. They have brown to glossy copper-colored fur on their back with the belly fur being lighter.

This bat can be seen in urban and suburban environments of mixed agricultural use. As generalists, the species can be at home among timberline meadows to lowland deserts, and …

Nov 26, 2025 · The Big Brown Bat, scientifically known as Eptesicus fuscus, is a prominent vesper bat species widely distributed throughout the Americas. Notably described as a species …