Hi all! My hen, Rebecca has been breathing with her mouth open for at least 2 weeks now. Her breathing doesn't seem to be labored, but every now and then she'll cough and she has lost her voice almost entirely. She's eating, drinking, and acting normal. So I haven't been extremely concerned, but the open mouth breathing and occasional cough are now accompanied with ruffled feathers (no roo). I got her as a pullet along with two others. She was the biggest of the three, but now she is the smallest. Her comb is still bright, but not as bright as it was a few weeks ago. Her egg production is still great. She rarely misses a day. Although her yolks are slightly paler than those of my other girls, her eggs are the biggest. She is an EE - the others are a Barred Rock and an Ameraucana. I appreciate and advice you may have!