Ive noticed three of my older chickens have been picking on my youngest hen. They pecked the corner of her eye and around that her eyelid is now scabbed. Today morning i saw foam in the corner of her eye. The same eye she was pecked. I tried wiping/cleaning the foam away, but its kind of hard with one person...and a fussy chicken. What does the foam mean? There are no avian vets near where i live. She looks healthy and is showing no signs of anything. shes still eating well and running around.