Eastern bats belong to human animals, often inhabit all kinds of artificial buildings, such as houses or building roof frames, ceilings, door and window frames and bridge gaps, can crawl or hang upside down in the gap between the roof beams of the shed. The number of populations varies greatly, few live alone, often tens of small groups, sometimes hundreds of thousands of people live together to form a larger population. Emit short, wide, echolocation sound waves with multiple harmonics for catching insects in open environments. In the daytime habitat, it often emits communication calls that can be heard by humans, which are used to express their own emotions or physical conditions.
Eastern bats give birth at the end of spring, between June and July for the feeding period, each birth of 2 children, generally living in the open grassland or foothill river valley, choose various buildings for shelter. During the breeding period, males and females inhabit separately, females integrate 50 ~ 70 individual groups, and after the young live independently, males and females mix to form small groups. When the young are frightened, the back close to the mother, two feet hold the mother upside down, or crawl under the mother's body; The mother will also take off with her young when frightened.
Listed on the International Union for Conservation of Nature (IUCN) 2008 Red List of Threatened Species ver 3.1 - Not Threatened (LC).
