Steep Decline in Bat Population Forces Wisconsin State Park to End Bat Watch

The little brown bat population at Devil's Lake State Park dropped from 200 to 20 in one year thanks to white-nose syndrome.

The little brown bats at Devil's Lake State Park are the latest casualties of a fungal disease that has been devastating bat populations across the country, reports the Baraboo News Republic. The park canceled its naturalist-led bat watches after officials discovered white-nose syndrome had reduced its bat population to 20 from 200 since last year. The disease, which rapidly spreads among bat populations, causes the mammals to come out of hibernation early, which often proves fatal.