One of my hens started to be wheezy and sounding like she had laryngitis when she "talks and squawks" about 2 months ago. She acted fine. No other respiratory symptoms, eating, drinking, pooping, laying and running around normally. I had someone suggest VetRX which I tried and it worked great. Put in the water, under wings, sprinkled around the shelf where the girls roost, and gave her a bit down her throat. I know some think it is just like vicks for chickens and not that helpful, but it worked for us and I'm not a big medication person. I do have some Tylan around that I could give her if necessary. Anyway, the past few days since the weather really turned cold here (20 and below), the laryngitis and wheezy exhalations have started again. Her lungs sound clear when I listen with a stethoscope and I have started the VetRX again. Anyone know what would cause this? She is really acting normal except for this.