I bought hatching eggs last spring and got a variety. I believe the lady I bought the eggs from said that this was a Birchen Ameraucana. I always figured it for a hen until I saw "her" crow today. Is a Birchen Ameraucana a purebred bird? Would it be useful to keep him for when I'm keeping some hatching eggs next spring? I'm assuming he carries a blue egg gene.. I have 6 EE'S, what could I expect to get from crossing him with them?