Yep, never know when you'll run into a frozen bird in mid-air...
Chicken Cannon
The US Federal Aviation Administration has a unique device for testing the strength of windshields on airplanes. The device is a gun that launches a dead chicken at a plane's windshield at approximately the speed the plane flies.
The theory is that if the windshield doesn't crack from the carcass impact, it'll survive a real collision with a bird during flight.