Hi all. I have a barred cochin hen that is about 10-11 months old. I believe that she has started to brood within the last few days and I am not sure if I need to break her of this and if I do what do I need to do? She is still pleasant and will let me pick her up out of the nesting box without pecking at me, but quickly returns to one of the nesting boxes as soon as she is put down. Up until the last few days she had been outside running around the chicken yard with the rest of the girls. Do I need to worry about her getting sick if I let her wait it out?