Hi all, I am new to the chicken world and so excited to have 9 new chicks that are currently less than 2 weeks old. I have noticed my barred rock chick has started a yawning motion, stretching out it's neck, and is not growing as fast as the other chicks. Is this something I should be worried about? All comments or knowledge welcome as I'm out of my depth and don't want anything to happen to my little one. Help, help, help please!