My pet Silkie just isn't acting normal. She isn't moving around much, keeps shaking her head. Walking seems difficult for her, like her balance is off. When standing she is kind of weaving back and forth. Not much of an appetite, very quiet. She is 6 years old. She is an only chicken and lives indoors with us, but goes outside during the day. When she is outside, the flies will not leave her alone, they are relentless against her. I have been diligent in keeping her clean and avoiding fly strike(she got that last year). Any suggestions?? I don't want to see my poor girl suffer.