Here's a video of exactly what she's doing - I brought 9 new chickens home yesterday. They all seemed fine when I picked them up and when I put them in the "introduction" coop about 5 feet from my main chicken run. This morning I went to turn them loose in the big run while my other chickens free range and one of them appears to be gasping for air. She drank a small amount of water, or attempted to, but other than that she's just been sitting down and gasping. Her crop feels normal and I don't see anything in her mouth that looks unusual. Please help! I know I should have quarantined them longer but the place I got them from seemed well run and all the birds looked healthy. They haven't actually been mixed with my existing flock but have been side by side with them in their run. How worried should I be about the existing flock?