We report the results of all readily available inventories of wintering bats in Vermont. Surveys at 23 hibernacula were compiled from the literature and unpublished data of numerous biologists and cavers. The earliest Vermont records date back to 1934. Only five hibernacula were systematically surveyed for more than 45 years. Despite data limitations, several trends have emerged. Since the 1930s, wintering populations of Myotis sodalis have dramatically declined; wintering populations of M. lucifugus have increased; and wintering populations of all other Vermont species (M. leibii, M. septentrionalis, Eptesicus fuscus, and Pipistrellus subflavus) have remained small.
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|Published - 2001