I have a hen that is acting peculiar. She isn't laying eggs or sitting on any eggs, however, she acts like she is. This hen has sat on the edge of the nest box for 4 days in a row. At first I would pick her up and put her on the ground at much protest from her. The following morning she would be in the exact same nest box sitting on the outer edge with a death grip. There is another hen that has been sitting on eggs for about 3 weeks now and seems to be doing well. We have had successful chicks in previous seasons with just the mother hen taking care of them. This one hen though... she has me scratching my head as to what the heck??? Any ideas anyone?