How old before the chicks are old enough to not fit through the fencing? They're just regular chickens, not the small ones. They're 4 weeks old and seem pretty big to me but apparently can still get through the fence. They were having supervised outdoor time, so its just wire fencing I set up in a circle to give them some play time, not their permanent run or anything. But it is the same fencing we eventually will use for the run. I'm just glad I was watching them and just lifted it back up and they went right back in, but I guess they're not big enough for that yet. Will they eventually stop trying to go through? I'm worried they'll get stuck or hurt.