I have only had my chickens for a year, and a squirrel has been getting in the coop to steal food the last few days. This morning I went to check on the girls and one's belly is scratched and bloody with no feathers down near the lower belly / feet. It is really bad. What do I do to care for her? I have never had an injured chicken before. Do squirrels carry diseases that I should worry about my hen getting? If anyone has any advice, or at home remedies, I am looking for some help. Thanks in advance.