One of our youngsters, just over 2 yrs old, looks like she has been molting for several weeks. Yesterday, noticed her standing by the water dish with her eyes closed. She didn't come back to the coop last night and I finally found her in the barn. Separated her from the flock, but she is not eating. Just stands. No movement. Eyes open and eyes close. No egg trapped. Vent is clear. Color is good. Not limping....No other telltale signs. Any ideas what's going on and what to do?