KING OF PRUSSIA, Pa. May 16, 2004 — A Canada goose smashed through the windshield of a van carrying high school students to a science fair Sunday, leading to an accident that killed the driver, police said.

The driver was taking eight girls and a chaperone from the Baldwin School in Bryn Mawr to the Pennsylvania State Fair when the collision happened on the Pennsylvania Turnpike near Valley Forge, northwest of Philadelphia. The van went 250 feet up an embankment before striking a tree, police said.

"We can only assume that he was rendered unconscious by the impact of the goose, and that striking the tree is what caused the fatality," state police Sgt. Robert Foose said.