mites cause anemia and will make the chicken very sick which in turn stops them from laying and also from wanting to eat or drink. so you have your work cut out for ya, after treating her you'll have to make sure she is eating and drinking give her lots of yogurt scrambled eggs, even canned premium cat food, salmon canned, even tuna.. along with her regular feed. and if you can get some poultry drench or poly-vi-sol w/o iron you can even give her that. the latter 2 goes in her water or dribble on her beak to get her to drink for ya..
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