a bat rests upside down during the day in the catacombs of eastern crimea

animal animals bat bats biodiversity blythii book brown cave cavern caving chiroptera chordata closeup colonial colony conservation crimea endangered ferrumequinum flittermouse fly grotto insectivore insectivorous lesser mammal mammals manwings megachiroptera mice microchiroptera mouseeared myotis nature nocturnal of red rhinolophus scrotifera sleep species ukraine upside vampires vespertilionidae wild wildlife