I have a first time broody silkie. She's setting on 8 eggs and I check under her twice a day because if any of the other hens lay in her box, she'll pull those eggs in under her too. Last night though when I checked, she was in a different box, sitting on a nest of 6 different eggs! Why would she do this? Are those eggs still okay to use? I was debating screening off her box to keep her in and the others out but I wondered if this was the best scenario? If I do that and then let her out once the chicks hatch, will the others pick on her?