Hi, all. We have three chick, 4 weeks old today, that are doing very poorly. All are much smaller and have less feather development than their brooder-buddies. Over the last few days 2 ( a buff orp and a barred rock) have been progressively wobbly, seldom stand and fall over backwards. Poop looks fine, eyes are clear, they sleep alot. They've been in a separate brooder for 2 days with vits, electrolytes, and a ton of babying, and no sign of improvement. Could this be genetic? Thanks, Mike.