I have one that has never laid an egg. I call it my he/she chicken. It has some characteristics of a male, i.e. some saddle feathers, and it is larger then a hen, but it has a small comb, and other features like a hen. It never crows or makes any sounds really. It's kind of a loaner, doesn't try to mate either way. Stays off by it's self most of the day, but comes back to the coop at night.
