i have had illness in my coop and they have and are being treated. sulfa antibiotic right now. they have gone through tylan, and one other before this. also ivermectin for mites. i have one rooster im not sure about. the eye is swelled, no bubbles. it is below the eye and it feels like bone. it has been there for 3 days now. i did think injury. today i was handling him feeling the lump ect... and he moved his head as if he were dizzy. i sat him down and he started with the stretching of the neck and opening the mouth like chocking and still the wobble head like dizzy. this is a (i think) a barred polish rooster. it is black and white but not as defined as a barred rock soft looking with a full white head piece. but on the beak there is a horn? he is young, just getting spurs. all the others are better now.