Suicidal Birds

On my way home today there was a bird on the side of the road. As I got closer to it I started to wonder if it was going to move. It stood there, facing me, almost in defiance. Why is it that a 3,000 pound vehicle racing toward a puny little bird wasn't intimidating? That bird was playing "chicken"! I came nearer and nearer and all of a sudden...I cringed and noticed that... I won! The bird flew away. WHEW! That was close!