I have a BO hen that slept in the egg box last night and tonight. Yesterday she did leave the coop in the morning but today I took her out to see if an egg was stuck but her vent looked normal and I could not feel any eggs in her belly. I put her on the floor but she got right back in the egg box. I do not have problems with chickens sleeping there. She also has lost some color in her comb and just looks a little weak. There is no more droppings in the egg box than normal. I'll have more time after work tonight to take a closer look but any ideas on what might be her problem? Thank You!