Hi, I have 16 chicks - 2.5 weeks old. 8 were packing peanuts - feathered legs, maybe cochins? Anyway, all of them look great except for one. He hasn't grown as fast as the other packing peanuts - he is quite small, almost half their size. I noticed today that he is shaking quite a bit and just wants to lay down. If he gets bumped by another chick he will get up and walk around, but very wobbly. He uses his wings to steady himself and ends up falling over. Then he sits down on his haunches for a few moments and then lays down. Is there anything I should do for him? The rest look very healthy. Should I quarantine him? I have them in a large box in my garage - no drafts. It has been getting cooler at night - in the low 40s, but the chicks don't seem to huddle at all. They are on pine shavings. Thanks!!