Tonight while out in the coop, conducting bed check; I heard a strange coughing sound. Investigation revealed one of my marans was mouth breathing and would occassionly cough. Her eyes are clear, there is no nasal discharge, her comb is bright red. Not sure what was going on. I didn't want to leave her in with the rest of the flock. Then as I was carrying her into the house, I could hear her rather wheezing breathing sound. So now she is in a cage in the family room. Anyone have any suggestions.