Fun Facts - The population of Indiana bats have declined 56% in the past 40 years - Indiana Bats were listed as endangered in 1967, and were placed under the Endangered Species Act in 1973 - They hibernate in limestone caves called hibernaculas - After a mother has her pup, she cares for it for a month and takes it on it's first flight in tandem. - Despite the benefits, hibernating in large groups can be disastrous from human influence. - Indiana bats are also known to nest in man made structures such as mines, buildings, etc. - Dozens to a hundred mothers can inhabit one dead tree in a maternity colony - Trackers can only weigh 3% of an animal's body weight, so the bat tracker can only weigh 0.18-0.27 grams.