Ok, maybe this is a dumb question, but my Faverolle hen managed to get her whole face (comb, muff, etc.) muddy a little over a week ago, and now it's just dry and crusty. It hasn't been wet, so I figured she'd clean herself eventually, but no dice. She has access to dry areas at all times, and my other two hens aren't muddy like this. She looks scraggly and I'm thinking it can't be too healthy for her. Should I bathe her, and do you have any advice on the best method for bathing?
Here she is now:
And here's what she normally looks like:
Here she is now:
And here's what she normally looks like: