We've had two hens for the past year, and yesterday we purchased three day-old chicks. One is an aracauna and the other two I was told are "production blacks". I haven't been able to find out anything about this breed, if, indeed, it is a breed. I was told it is a sex link. Any information about production blacks--how big they get, what the hens look like as adults, how well they lay? My chicks are black with a cream spot on the head, under the beak, at the base of the wings, and on the rump. I'd post a picture, but I'm too much of a luddite to be bothered to figure it out.