Hi everyone. I'm new here and I'm worried about one of my little silkies. He's about 4 weeks old and on and off for the past few days he has been shaking his head. It seems like after he scrathes an itch or stands up after a nap he cocks his head back and forth for a minute or so and can't get his balance. He isn't sick. He's eating and drinking and running around but he does this head thing. Any ideas? I've had chickens for almost 6 years and I have no clue.