One of my hens (pullet actually, I think she's about 10 months old) has stopped laying and is seeming depressed. She sits on the roost and doesn't come out often, and when she does, she walks slowly and is a little puffed up. Her comb still looks healthy and bright red. I thought she might be eggbound but do not feel anything when I feel the abdomen. Did give her a warm bath and "lubed" her vent, nothing. I did notice that she has lost her beard (she's an americauna) and her neck is bare where it was. Is depression behavior part of a molt? She had problem with rubber eggs before and I amped up the oyster shell, she began laying normally. Now she's stopped and has this behavior. Also, we have recently introduced new hens and a couple of roosters (in the last month or so). All are healthy, but she has been getting mounted and this was new experience for her. Any thoughts on what this could be and should I be concerned about some other illness? Thank you!