Chicken Little

Chicken Little (real name: Ace Cluck) is the titular protagonist of Disney's 46th full-length and first computer-animated feature film with the same name. He is a small chicken who was being outcast and ridiculed by the townspeople of Oaky Oaks after mistaking an alien spaceship's camouflauge panel for a "piece of the sky."
He was voiced by Zach Braff.