Just wondering, I read my bourbon reds have a color difference in their feathering when they start to feather out. do the slate blues have the same? I have two with black splotches and one with out.....here are photos.... no black bird... one of the ones with black... Thanks I'm thinking the black spotted ones are boys, but the bump on the one in the photo is bigger than the other one, so I wasn't sure. Also, they are about a month old.