One of my leghorns has been in her nesting box for nearly a week. I do not have roosters but I believe she thinks she has been bred because one of my mean Sussex hens got on her back and held her down. Ever since, she has been on the next. She is not injured and doesn't appear to be ill...just a wanna be mommy. I reach in and take out the eggs every day and once in a while take her out of the next and put her out in the yard with the other hens. Within minutes, she is back in the coop and her nest. I haven't seen her eat or drink in days, however, she doesn't feel any lighter than the other hens. A friend said that she will continue nesting until she hatches an egg or at least thinks she does and suggested I get a chick and slip it under her during the night. I really don't want to add to the flock, but will do so if it works. Any other suggestions???