First time chicken mama here and mine are about ten weeks old. They have been extremely happy and healthy. They have plenty of fresh water and it is cool. They are in the shade - I put the electrolytes with vitamins in their water. Feeding them their regular starter chick feed. I have grit in the pen. I offer them greens as well, give them meal worm treats. They are growing like weeds, but this morning one of the RIR seems to be breathing with her beak open. She is drinking and walking around but just doesn't seem to be as active as the others. None of the others are breathing like that - is there something I need to give her or treat her with - if so what and how is it administered. I've had them for about 8 weeks and this is the first time she has done anything like this. They don't have any bugs or anything on them. Their pen is clean and I wear only one pair of shoes out to the pen - when I come back I take them off so I haven't carried anything to them that way. Should I be worried. What should I do - should I separate her from the flock?