I have a mutt chicken in my flock who has been guarding the nest boxes for about a week and today I found her in the community nest box with her egg and two stolen from other hens. She has been in there all day (so far) and is super cranky. I just hatched out chicks in the house here this week. I would consider giving her the Roos to raise. Do chickens have a biological clock? If I slip week old chicks under her, will she be suspicious? Thanks!