My 16 week old roo shakes his head around like he is saying "OH NO YOU DIDN`T" If you don`t know what I mean he moves his head around in a circle. I did not see any mites or bugs on his head. He eats,runs and poops fine. He just started to crow a week ago so maybe he gave himself a headache or an earache. None of my other birds have this problem. he dose like to peck around the compost pile so maybe he has a parasite. What should I do?