Angry crane attacks office door after knocking is ignored

TAMPA, Fla., May 24 (UPI) -- A worker in a Florida office building captured video of a sandhill crane knocking on the glass door with its beak before launching an all-out assault on the door.

The video, filmed Friday in Tampa, shows a crane using its beak to knock on the building's glass door while a second, calmer crane watches from a distance.

The crane's knocking soon turns into an all-out assault using its beak, wings and feet to bang on the glass.

It was unclear whether the crane was trying to get inside or merely picking a fight with its own reflection.