Breathing is perfect, rooster was fine this morning at 6.30 am and when I got home at 7pm his left eye is swollen shut. Skin looks normal in colour, can't see any leaking fluid or pus or mucous from nostrils. Have isolated him, but am unsure how to go on next? Am making a manuka oney and oj mix to add to is water in the morning and will do the weekly coop clean but spray with anti bacterial/fungal/viral spray which I only generally do about every 6 weeks (it's very strong stuff. He is - or was - in with 2 hens and there's no fighting amongst them or sharp edges in the coop that would make me think it's an injury. I'm leaning towards respiratory infection, but there appears to be no breathing problems and has been in great form. He was hunkered down a bit tonight but that could just be he didn't see me right away. He certainly went nuts when I tried to catch him for a closer look. I have no chickeny vets near me, so don't know where to go next. How long do I have to try home treatments and what might be best to try first?