The Vermont Department of Fish and Wildlife is asking people to let biologists know whether they spot bat colonies in buildings and other locations this summer. It’s part of an effort to monitor the health of the state’s bat population, which has been devastated by white-nose syndrome. For example, the little brown bat that was once the state’s most common bat is now on the state endangered species list. State wildlife technician Alyssa Bennett says reporting bat colonies is one of the most important ways the public can help conserve the species. She says the need for information is especially acute north of Interstate 89. The ‘‘Got Bats?’’ campaign will continue throughout the spring and summer.