New backyard chicken owner here, re-homed these beauties in early March as babies and have loved every minute of them. This week, I noticed one of the girls shaking her head more than usual. Of course, I've trolled so many forums, but feel like I'm chasing ailments that my girl isn't really experiencing (sour crop, something stuck in her hear, mites, lice, etc...). So here I am, posting my first post on this website in hopes that you can help me diagnose and treat her. See attached video. Daisy is the white Delaware (shown here with her coop mate hens "Goldie" and "Dukes"). She shakes her head like this unless she's distracted. Eating normally, drinking normally, clean coop, normal poop, normal other chicken behaviors. I've checked her throat - looks normal, no worms or anything. I've done some looking for lice or mites, but don't see anything. The other chickens don't seem to be doing the same. I'm thinking early signs of possibly mites, but I'm just not sure. TIA for your assistance!