I had a hen go broody in late fall and I didn't want her hatching chicks that late in the season so I just kept taking eggs out from under her. After two weeks of that I gave up, marked the eggs she had and let her get to it. She hatched three chicks out on Nov. 30, one was smaller and only lasted two weeks, not sure what happened to it but it just disappeared, likely killed and eaten by the other birds. The other two did really well and are taking their place in the flock now. I think the mild winter had a lot to do with them doing well. Broodies can be pretty stubborn.