I'm not sure whether one of my EE's is moulting or not. Yesterday I noticed that she has a prickly bare spot on the underside of her neck and this black-ish, oily, sticky goo on her underside. I can't find anything in the yard (where they were let out yesterday for a treat), in their pen or in the coop that would cause this icky stuff ... and then there's this bare spot on her neck. I just peeked out there a bit ago and she's out in the pen with the rest of the flock preening herself like mad and otherwise seems to be perfectly healthy. Is this moulting?