Tapeworms should be treated. Tapeworms are spread by worms, flies, snails, and slugs who serve as an intermediate host. Removal of droppings and these hosts after treating your chickens can help to control tapeworms. Otherwise, the chickens will get them again. Being out on fresh grass and perhaps cleaning out the coop bedding would help as well.
I would get a fecal test as well before treating if possible. That will tell you if other worms are a possible problem. Chickens can get roundworms, cecal worms, tapes, gapeworms, and capillary worms. The other worms require another type of wormer, and the dosage can depend on which worms may be present. Capillary worms which are more rare, are very deadly.
I would get a fecal test as well before treating if possible. That will tell you if other worms are a possible problem. Chickens can get roundworms, cecal worms, tapes, gapeworms, and capillary worms. The other worms require another type of wormer, and the dosage can depend on which worms may be present. Capillary worms which are more rare, are very deadly.