When you hatch pullets it will be become more obvious Those photos were mine. Here they are again with the first picture being a new one of the two pullets (and their brother) I am waiting on laying. I think I have an egg eater, so that is why I have not gotten eggs yet. This is the best example~ Pullet, rooster, pullet. Rooster chicks: Note the almost blue grey hue to their bodies and mostly yellow heads. All pullets. Dark bodies with very little yellow on heads.