I have a Jersey Black hen that spends all of her time in the nesting box, yet she rarely has an egg. If I force her out she seems to walk around fine, but will hop back in the box fairly quickly. Been going on for a few weeks. I've checked her over and she doesn't seem egg bound, but I am going to explore that more to be sure. I noticed today that her breast and belly feathers are gone, but they aren't pilled up in the nest. Any ideas for this behavior? I grew concerned after noticing the feather loss.