Ammonia burn or beginning of Bumblefoot?

[TC Schmidt]

I have a Lavender Orpington that was recently broody, has since hatched her chicks and is still separated with them.
They are sleeping in a small crate but free range all day. There are two black spots on her foot that I don’t really know what it is. There is no swelling and their living conditions are quite good but normal, lots of hay in ventilated areas but still poops some in the crate so I clean it out every couple of weeks.
I am also curious how common are ammonia burns are.

 

[Quail345]

That definitely looks like an ammonia burn to me. What is their bedding material?

 

[Quail345]

Oh, I just saw. It's hay. Try using wood shavings instead. Buy large flake so the chicks can't eat it.

 

[TC Schmidt]

That definitely looks like an ammonia burn to me. What is their bedding material?

Ok thank you, I’ll look into that and probably clean out the crate a little more often as well.