I know there have been a lot of posts about chicks who have developed scissor beak as chicks, but I've been having trouble finding information about it in older birds. My young Rhode Island Red rooster, Elvis, has just within the last couple of days started developing a crossed beak. He is about four months old. He has never shown any signs of a crossed beak before. We had one little ameraucauna chick who developed one and I culled her when she was about four weeks old. He is in a coop with eighteen non-laying pullets (they are also younger than he is) and after some initial health challenges with a few of them, the flock is healthy. Their feed is Nutrena Starter Grower. I give them access to grit and they get some occasional greens. He has been eating and growing well. They also enjoy an outside run during the day. Is it normal to develop one this late? Is there anything I can do to stop it? Could it be something else? I know I can't breed him if that is what he has but I'd hate to have to cull him.