Ok everyone, I need help. They keep getting sick. Today I found another bird, this is 4 birds now that have gotten the samething. What causes this disease? I don't know what to do. I'm separating as soon as I see it. I can treat with medicine but I need to stop this from happening or I will go broke buying medicine for all of them. Thanks!
For you, I think you are now under a general flock maintenance category, rather than a disease, injury, and cure. Because the advice you really may need is how can you do the best thing for your chickens and your flock.
But to answer this, it may require asking about your flock, how many chickens you have, their ages, what you feed, have any new chickens been brought in, have you lost any to illnesses, do you deworm, etc.
For my flock, I have come to be able to just ignore foamy eyes and even mucous dripping eyes in adult roosters. It is a rare occurance that flares up moatly when the weather gets cold and rainy, even then it only happens in roosters.
Its hard to tell from the photo, but is that just a foamy eye? It doesnt look swollen. The way I treat without use of antibiotics, I summed up earlier.
Day 1 - deworm
Day 2,3 - observe
Day 4 - only if symptoms worsen, antibiotics
Day 5,6 - discontinue antibiotics
The way I have come to have such a healthy flock is by increasing the number of watering stations to have a lot and keep them clean every day, and also by offering even better feed options. The healthier they started eating after changing food, the less sicknesses happened. So these are general long term flock issues that take time. Sorry for the long post, I just have never had success with using antibiotics to prevent illnesses.
As for the specific illness, it probably is MG which never goes away, but as I have done in my flock it is preventable from causing them harm. It can and will spread to all your chickens, even if you never see symptoms in them. Hope this is somewhat accurate and helpful. Living with MG in the flock is extensively discussed on BYC.
If it isnt MG you could consider a whole flock antibiotic treatment but why would be my concern.