A few days ago I got an extra light brahma in case the one with a bum eye doesn't make it. The new one was in a bin of straight run chicks at TSC, and had a spot on it's head. I thought it might just be a weird marking but now it's fading and appears to have been an ink mark, it's not poo or food. It looks like it may have been blue or black ink. So could a sexed chick have made in into an order of SR chicks? Do hatcheries use different colors for different sexes, or could they have put a blue or black mark on a pullet?