I have been bating the same sets of eggs for over a month now and just got a surprise! The roo is a Black Cochin and the hens are RIR and Redstars or Productions..whatever you want to call them. Anyway, every chick I have hatched out has been black and white as chicks and feather out fully black. In this most recent hatch I got 3 yellow chicks and 7 black ones! My question is, Where Did The Yellow Come From??