It seems that I have a bit of an outbreak in the pea pen. I need some help in identifying this ailment, so far I have given the three peas an injection of Agrimycin and have started treating the water with Durmycin (Tetracycline hydrochloride) soluble powder. One possibly two have a cough, although not necessarily the ones with the swollen and frothy eyes. I was thinking it might be respiratory however I don't see any nasal discharge on any of them. Silly birds have a coop they stay in all day then roost out in the pen all night in sub zero weather.