The vast majority of "copperhead" sightings in PA are actually northern water snakes. Also called "king snakes" and milk snakes" by some locals. See link for some pics: http://srelherp.uga.edu/snakes/nersip.htm These look a whole lot like a copperhead at a glance, unless you've actually seen a real copperhead. They are really spectacular looking snakes if you don't mind snakes.

I don't get upset by one mowed down snake, mis-identified or not. The people who go out of their way to kill ever snake they come across are a different story. Just thought I'd add some education to this necro'd thread.