No, they're not blind, so you can leave that "blind as a bat" expression behind. But not many critters can see so well in total darkness, so they have other ways to compensate.
|Juvenile Mariana Fruit Bat / Photo Credit, Anne Brooke - USFWS|
Picture a calm summer evening. Most people are only dimly aware of the aerial creatures that may dart and dive nearby. Indeed, many would think these animals are birds unless their activity is closely observed. They would be surprised to discover these flying creatures are actually bats using their designed sonar to detect and track insects as small as mosquitos—prey these bats pick up and devour on the wing and in the dark.To read the rest of this short article, navigate yourself over to "The Ultrasonic War Between Bats and Moths".
Looking at the amazing design features of a typical bat, Douglas Futuyma assumes “the only scientific explanation of adaptations is the theory of evolution by natural selection.”