This agile, maneuverable flier gleans from foliage and captures prey on the ground and in the air, utilizing vision and echolocation. Capable of hovering and avoiding obstacles. Large prey may be carried to the roost for consumption. Although incapable of walking, this species can take off from a flat surface. The roost must provide shelter from heat and aridity.
Preferred roosts have high ceilings and sufficient space for flight.
Night roosts may be in buildings, mines, bridges, rock shelters, or other sites with overhead protection. Females form maternity colonies in summer, preferring tunnels and caves. Males form smaller groups, which occupy typical day and night roosts. California leaf-nosed bats have been kept 6 wk in captivity without drinking. Roosts in rocky, rugged terrain with mines and caves.