I noticed yesterday my 1 Buff orpington hen was shaking her head. It's a real quick shake, she is still eating, drinking, pooping...everything is normal as usual...just shakes her head. I looked to see if I could see any type of mites. I didn't notice any, and none of my other hens are doing this. She is still doing it this morning, not as often as yesterday. Could it be a bug in her ear. I tried to look for that also....but I really don't see an opening to an ear canal. Do they have one? I tried looking this up on the net and didn't have much luck, so anyone with an idea would be great. Thanks!!