We are relatively new to the chicken world. We had 6 laying hens last year and this year decided to double that number. Last year we had no problems with any of our chickens. This year we seem to have one that is not healthy. Her crest is very droopy and around her eyes look as though she is "not feeling well". She is not very preppy or interested in much. We have moved her to a coop alone, but tonight she has decided to sleep in the tree, rather than the warm coop. Her feces are loose. she seems to be hungry but has little interest in anything I give. Any ideas? Would be grateful!