I have another broody hen. Our new banty has just started laying over a week ago. I have considered putting the banty eggs under the standard size chicken. I don't think she would break the eggs. The reason being is that the banty has been laying eggs in the same nest with the bigger chickens and they have not broke yet. I just wondered if there was any other reason why this would not work. Except after they hatch will the mama be too heavy and squash them? I know banties can hatch standard eggs but what about the other way around? Anybody done this before? btw, even though it is harder to see if they are fertile or not (we cracked open an egg to check), I do have a banty roo and I have seen them do 'the deed'.