Hey there, I recently got some blue and black Ameraucanas. Two of my blues have brown spots on them like this. I suppose I will have to cull them, I just wanted to share their pics and see if these are common colour mutations?? Would that be some kind of wheaten gene coming out? They are still very handsome, I may keep them for my Olive Egger pen. Any guess on sex while we are at it? lol. I have a feeling both are boys. Here is the first guy: I love this guy! So bright!