I have have a 10 month old Orpington laying eggs who stopped laying eggs about 6 days ago and for the past 4 days just sits in her coop refusing to come out. Even in the morning after not having food or water all night she refuses to come out. She seems fine otherwise. Her eyes are bright, her comb is red, her underside is soft and nothing seems hard, extended or swollen. Her stools look normal. I see no signs of respiratory distress or nasal discharge. When I put her down she will walk over to the food and eats/drinks a bit before venturing out in the yard for a short period of time, but then she retreats back to the coop and doesn't come out until I force her to. She has no trouble walking, even running at times. I noticed when she gets out in the yard she lays in the dirt and dusts herself vigorously. I am not sure if that is unusual or is routine for her when she first gets out in the yard. I normally do not see them after I let them out in the morning because they free range and run off to an area out of view almost immediately. So that could be her daily routine and nothing out of the ordinary. I only have the 2 hens and the other one is acting her usual self. I am not seeing any unusual behavior with her. It's like she is clinically depressed! lol. Does anyone have any ideas?