I don't see any blood anywhere for it to be IL.
Just one or both eyes swollen and they can't breathe and die. It happens QUICKLY. I will cull everyone showing symptoms but should I cull everyone that was in that pen? I have 5 left.
I have no idea what I'm dealing with. I have a flock of mixed breed laying hens here that have something very bad. I have had them for one year with no signs of illness. I practice very strict bio-security so I have no idea how they got this. I have never seen an illness here.
Symptoms are...