Chicken Has Dried Poop On Her Bottom

[Awestruck]

I picked up one of the chickens and she has dried poop on her behind. I don't know how to get it off. I tried to gently pull it off, but it appears to be stuck on. How is this supposed to come off?

 

[Chicken Bff]

put warm water on it then try. If that doesnt work use siscors