I just picked up my chicks from the post office purchased from a reputable hatchery. At least I've had good success with them before. It's been about 3 hours and one of the chicks is shaking it's head and scratching at it's ears. It does this so violently that it sometimes flops over on it's back. It may also have splayed leg syndrome but I can't tell if it's just trying to keep itself upright. I thought about separating it from the others but decided against that. One of the chicks died in transit. Any suggestions.