Rooster hen? Hen started crowing?

[Chicken Unboxing]

She had green feet. I don’t think your’s are actually gray, they’re probably a dirty slate or dirty white.

I started treatment a few minutes ago. I dipped her legs in vinegar then some olive oil. I then covered her legs with petroleum jelly and let it dry. I don't know how bad my case is but I'll update when it looks better and I can tell the color of her natural feet. I thank you again for telling me about this before it got worse.