Last week I noticed my one year old BO, Annie, occasionally shaking her head - I don't know how else to describe it. The head shaking is getting worse. I have checked her over and found nothing wrong. Her comb is lighter than it was, she sits a lot and is first to the roost at night. She is eating, drinking, scratching, dust bathing, doing all the things chickens do. She joins in the fun when I bring treats out. I don't know if she is laying or not. I have six hens and almost always get five eggs; once in a while I will get six. I've tried to catch them on the nest to see who is laying but not having much luck. They all come running when they hear the gate open. I made a video this afternoon but haven't yet figured out how to attach a video. I'm asked to enter a URL??? I made the video with my phone and tried to attach it using the internet on the phone but that didn't work either. Very frustrating. I realize it's almost impossible to try to diagnose without the video but I'm hoping someone will have an idea and I'll send the video if I ever get it figured out. Thanks so much.