These patches of specialized hairs are often restricted to the males, as is the saclike throat gland. Chaerephon differs from Tadarida in having ears that are joined by a band of skin, usually a more elevated mandibular condyle, and broader wing tips. Chaerephon differs from Mops in having less robust jaws and more constricted anterior palatal emargination. These bats inhabit open forests, savannahs, and agricultural areas, sometimes in the mountains. They roost in hollow trees, crevices, and caves.
Social structure appears to vary.
Group composition was stable, with some individuals remaining together at the same site throughout the 16-month study period. Three cohorts of young were produced during the wet season from April to October. A few young females stayed in their natal groups to replace the loss of older females, but most young of both sexes dispersed during the dry season, after they had attained reproductive maturity. Females were found to be polyestrous and able to have three pregnancies per season. The gestation period is about 60 days, and a single young is born.