I have an 9 mth old hen who has taken to staying in the nest box. she is not laying eggs right now, she squats immediately when I take her out of the box. I have been taking her out of the nest box 3-4 x a day and putting her back in the coop. she will eat and drink, move around a little bit, fluff up, and the other hens seem to pick on her, then she goes right back in the box???? None of them have hatched out chicks so there have never been any around, is it possible that she is broody?