What is the black substance on her comb?
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.




I would think the black marks on her comb are from pecking or injury while trying to avoid pecking. The eye film really looks like bacterial infection to me, either from a respiratory infection or injury.
This is what I thought too. But, there is no improvement after two different antibiotic ointments, and it's getting worse.
Fungal eye infections present with clouding film also.
This really needs to be looked at under a microscope. It is definitely an infection, the eye and sinuses are involved, but one can't be certain, whether it is bacterial or fungal just by looking at a picture.
There are no other upper respiratory symptoms, sneezing, discharge, etc.
A pecking injury usually has dots of blood, evident of the skin bleeding and scabbing. But that black substance looks like growth over a large part of the comb and around the nostril.
A vet should look at it.