My Golden Campine is 11 months old and has been laying large beautiful eggs until 2 weeks ago, they started coming out soft shelled, now she stays on the nest box and lays nothing, she doesn't show any symptoms of being egg bound and she eats and drinks only once a day. Could she be broody? I know campines aren't known for being broody but she's not quite a year. I have always had oyster shell and recently started giving them their own shells back, I have also given her a liquid vitamin D supplement, is there anything I'm missing?