My usually pristine white Delaware has started looking rather dingy (yellowish feathers) and her rear end in particular is quite dirty looking. I believe the latter started after she dust bathed right after our first heavy rain last month and got muddy. She is acting totally normal with the exception of laying in an annoyingly inaccessible part of her run. I’d consider giving her a proper bath but it’s so cold at night I’m really worried about her drying properly. Is this a concern or indication of a health issue? Should I actively do anything about it? Thanks!