A close-up of one of three African sheath-tailed bats (Coleura afra) that flew into my room yesterday evening. These little guys are small emballonurid bats, but cause quite the ruckus every night. The love to roost in the dark vents near the roof of our house, and I always fall asleep to their cute high-pitched bickering. A lot of microchiropterans can have a menacing attitude when cornered or held. When I approached this little one, it climbed around to face me and gave a sharp shriek while bearing its teeth. Shortly afterwards I took this photo and helped it and its two bat companions get along their way, back into the night sky. African sheath-tailed bats are distributed mostly in central and eastern Africa, with some small populations in western Africa and Angola. They are insectivorous, echolocating to prey upon flying moths, beetles, and other airborne insects, and have sharp incisors and shearing molars to back up their exoskeleton crushing habits.