We have a white leg horn (about 8 months old). Compared to her siblings she has always been a bit disheveled looking (dirty, ruffled feathers). She has been on/off lame by always seemed ok. Came home tonight (we live in New Hampshire) and she was laying on her back in a hole she had made in their run. I thought maybe hypothermia so we out her in a cat crate with a ton of hay and brought her inside. Upon further examination we noticed she is covered in super tiny black bugs. HELP! What do we do for her? How about the others who seem fine?