This is my Polish hen, Marshmallow. Her crest feathers have been getting noticeably dirtier lately and then the past couple days it's been raining. She's looking a bit haggard. We don't show her. She just hangs around with her friends in our yard and we collect her eggs. She's six months old and this will be her first winter. I'll be leaving the country for several weeks later this month and my husband isn't the most attentive chicken caretaker, so I want to get her all set up before I go. I'm wondering a few things: 1) If I do nothing, is there an increased chance of mites, infection, or something else with her feathers being so unkempt? 2) If I give her a moderately aggressive haircut, will that help or harm? 3) Do I need to actually wash her head, or will she and her friends take care of that? 4) Any other suggestions? Thanks in advance!