(YouTube link)
A passenger on a Delta flight from Madison, Wisconsin to Atlanta, Georgia posted a video to CNN of a flying creature in the passenger section. The plane was diverted back to Madison, where the passengers were rebooked. A Delta spokesman said the plane was searched, but they never found the animal. The plane then was returned to service. Link -via Arbroath
Wonder why it didn't get found? It probably crawled somewhere to die, poor thing.