I have not found any mites but I think that I have mice. Some of my chickens are missing feathers on their bottoms and towards their belly and have some scabbing. I checked for mites but don't see any. I do have a lot of mice (even get them in my home). We used to keep the food outside but moved it into the coop during the winter. Seeing that I am not finding any feathers in the coop (not a single one). I suspect that that is the cause. But I do have a loss of production that is = to the number of chickens with missing feathers. They are only a year old and this is the first spring that we have had them & there is no rooster. Should I treat for mites & set some traps. If traps, what kind is safe? I use simple snap traps in the house but I don't want "The Ladies" to step on them. Is there a safe way to place them in the coop?