We have permission from our borough manager to keep chickens in town as long as we don't have roosters. Well, my neighbors have 3 roos.(in with only 2 hens, yikes) They started crowing this morning, I have heard them practicing over the last week but this was the first full blown cock-a-doodle-doo! I am worried they are going to ruin it for the rest of hen-only chicken people. They are friends and I don't want to offend them, but they really need to get rid of their roosters. How would you approach them, if at all?