Estimates say as many as a million bats may hibernate inside the Millie Mine shaft. Here's when you can see them take flight.

Four of the nine species of Adirondack bats belong to the genus Myotis, the mouse-eared bats. The little brown bat is the most abundant of the four, and is the common bat of the region. During the ...

The big brown bat is the Adirondack’s largest bat; only the hoary bat is larger. The long, lustrous fur is brown. The ears, wing and tail membranes are black. Total length is 105-123 mm (4.1-4.8 in).

During winter, in northern Canada, little brown bats go into a form of hibernation called torpor and only need to breathe once every 90 minutes to stay alive. A single bat can consume one third of ...

Millie Mine, located in Iron Mountain, Michigan, is home to one of the largest bat colonies in North America. Little brown bats and big brown bats, both insectivores, inhabit the mine, with the ...