Funny story, when my first boy started developing his comb my husband came running in the house one day and said I had to come check my chickens as one was hurt and his brains was coming out. I run out there and was like which one my husband points to the cockerel. I laughed so hard and explained it was his comb.A walnut comb is what my mother and I call a brain comb, because that’s what they end up looking like. Weird protruding brains lol