I have a 21-week-old Polish hen with unusually long crest feathers. Every time she drinks water, the crest feathers get wet, dripping water on her head, face and chest. She has a perpetually wet head. With winter approaching, I am concerned that she may get hypothermic. Can I safely trim the feathers around her head? If so, how? How much is too much? She is a gentle bird and my husband can easily hold her, but I do not want to injure her.