Ugh. You have no idea. I've yet to see a more filthy creature. I especially loathe the morons who feed them at parks, golf courses, bike paths, etc. Talk about land mines...
The state of PA was going to set up a program where they could terminate/shoot/poison home-grown Canada geese (but not the flyovers coming down from Canada.) The problem is, a certain percentage of them land and decide to stay for good.