Bat populations are generally susceptible to decline because of low reproductive rates, and many species congregate at a limited number of locations during critical stages of their natural history cycle (i.e. hibernacula and maternity colonies). (scientificamerican.com)
«Little brown bats, during the fall swarm around hibernacula entrances. (scientificamerican.com)
«So we found that when bats first return to hibernacula, they still become infected. (scientificamerican.com)