This hen wanted to hatch chicks so badly she sat on air for a week after her own eggs were smashed by the tom, who apparently wanted to sit on them too, so I finally gave her some
chicken eggs to sit on (the tom by this time had lost interest in sitting on eggs). She didn't hatch many, but she seems to feel very strongly about these chicks. She's very protective, I had to take about 15 photos before I was able to get one in which the chicks are clearly visible; she kept getting in the way.