What's Wrong With Bobby D. Bat?

Bobby D. Bat is a little Brown Bat. He is old enough to fly at night with the other bats and hunt insects for his dinner. But poor Bobby D. keeps running into things. Things like telephone poles and weather vanes. His mother, Bertha, is afraid he might need glasses to see where he's going, so she takes him to Dr. Tobbie to have his eyes tested. But it isn't Bobby D's eyes! What in the world is wrong with Bobby D. Bat? With the help of a few friends-Sam, the Red Squirrel, Miss Pat-Pat the Bumble Bee, and Melody the Raccoon, all who live in the Piney Forest-Dr. Tobbie discovers the real problem!