In spite of the popular expression ‘as blind as a bat’, bats are not blind at all. In fact they see quite well. However, since the fly mostly at night when it is difficult for us to see, people have assumed that they can’t see either.
Bats don’t actually need to see where they are going as much as we might think. They avoid bumping into things in the dark by using a kind of radar system. This sends out a stream of high-pitched sounds. The sound hits objects in their path and then bounce back to the bat. It picks up these reflected sounds and pin-points the obstacles to avoid crashing into it.
Picture Credit : Google
