My BB red sit and hatched on is own. And was a great care taker. He would roost on the ground with his brood snuggle under him. He took his role very seriously.
Years ago I had an old English bantam rooster, BB red. He had several hens. One day I went out to chicken house and found him sitting eggs. He was very protective and hatched 7 chicks and raised them all. He still tended his hens and did all the normal things. He never set again. Dont know why...