I got 4 chicks from My Pet Chicken last Tuesday, 2 SLW and 2 BO. One of the BO's is not as energetic as the other three chicks. She will walk around for a few minutes, then lays down separate from the other chicks. She always has a slightly poofy look, like she might feel a little off, but not the droopy-sick-chick look. She is growing at the same pace as the others, and seems to be eating and drinking well. Her poops are normal. I am concerned because she seems to lack stamina, and as she gets older her activity level is not increasing much, while the other chicks are getting more and more active. Any ideas on what I should do?