Otherwise, they can not communicate with other bats, and bats are even more social than humans. (sciencedaily.com)
Found mainly in tropical forests on the Indian subcontinent, this spectacular mammal usually resides in a treetop colony with hundreds or sometimes thousands of other bats. (discovermagazine.com)
For example, the hoary bat population could decline by as much as 90 % in the next 50 years if the initial population size is near 2.5 million bats and annual population growth rate is similar to rates estimated for other bat species (λ = 1.01). (stopthesethings.com)