This hen has been fine up until this morning. I found her sitting down, tail drooped, and eyes closed. Upon closer inspection she has these bugs all over her. Her comb is not bright red and she doesn't want to eat or drink. She has been doused with DE. Is there anything else I can be doing for her? I haven't caught any other chickens to check them for bugs (They free range and are hard to catch with an aggressive rooster watching them). Her food is layer pellets with occasional scratch, veggies, and fruit. She is approximately 7 months old.