My Buff Orpington and one of my Easter Eggers have been going broody regularly since they started laying. I finally talked my husband in to letting them each hatch a batch of eggs. They both sat on their eggs faithfully, but the Easter Egger was clumsy and ended up breaking all but two of hers and kept scattering them so that she was not able to cover them all. After 23 three days I pulled the two eggs and cracked them to find that they had started to develope but the chick had died at some point short of full developement. The Buff Orpington hatched four out of the five eggs she was sitting on and has been an excellent mother so far. The eggs were from the community nest box, so I have no idea what they might be.