Eptesicus serotinus, commonly known as the serotine bat, has a few synonyms including the common brown bat, the late serotine, and the evening bat. The species is one of the most widespread bats in Europe, Asia, and North Africa, and can be found in a variety of habitats, from urban environments to forests and grasslands. These bats are commonly mistaken for other species, including the brown long-eared bat and the greater mouse-eared bat. The serotine bat is known for its distinctive call and feeding habits, and is an important contributor to pest control and pollination in the ecosystems where it resides.