Hi everyone. I've read that with sebrights you can tell gender by the comb. But I have 3 doing 3 different things... The first one is flat black on top, girl right? The one in the 2nd picture showed this comb beginning of week 2, so I figured a boy... Then from middle of week 2 on, the one in picture 3 started showing a different kind of forehead from the other 2, it's thicker and red and black. So now I'm lost, what do you think the 3 are? Thanks for looking!