I didn't notice this yesterday but when I checked on my 6 chickens this moring, as I do a couple times per day anyways, I noticed my first year egg laying australorp chicken had lost all of it's feathers around it's bum. Maybe 3 inches in diameter. It's red looking and I couldn't get a good picture of it since she kept moving and I can't seem to post pictures on this site. It's my first time with chickens. I live in NH and we got our first real snowfall yesterday, almost a foot. Can anyone shed some light on what's happening to her? None of the others have this. AND she layed this morning.