I have been reading all the post on this lately,,nothing matches exactly what my chicken is doing. But close. She has been laying for a month and is about 20 weeks old. The last 3 days she has been spending most of her day/time in the nest box. Thing is,,she still lays an egg everyday and I can reach and take it from under her with no problem. She doesnt puff up,,,well,,, maybe a little,, but does not peck or act as if she cares. She is laying there most of the time with nothing under her. All night too. Is she going broody????