My Chicken has been acting out of sorts for about a week..... mainly noticed at first that she was staying away from the rest of the girls and when I let them out in the evening she would stay close to the coop. Well yesterday I noticed that she was laying in the hen house while others were out. Other symptoms I noticed yesterday were that when she stands her tail is pointing downward instead of up, she is slow moving and has lots of poop on her but feathers. Last night she seemed to just go from one place to the other to lay down. I know these are vauge symptoms but does anyone know where I should begin?