Use the search on top of this page and there are a LOT of threads regarding this problem. Some use pliers, some say cut them with dremmel, one even used a hot potato to loosen them and just pull them off with their hand. Seems easy enough. Catching the rooster? Now that's an whole nother problem.
thanks I did find a thread about this. Ugh! I don't own a dremel, but I do have a hack saw and that will most likely be what I use. The hot potato leaves a delicate spur and I'd rather not do that. Better a blunt stub. I'll take pics. Nasty looking things they are.