I would look for any more worms on fresh droppings and take a picture. As debbie said, round worms are long thin and cream colored. Tape worms are small like grains of rice and may be moving. Tapeworms require praziquantel to treat them effectively. They make praziquantel tablets, droncit and drontal tablets with it, and for chickens, Equimax horse paste with praziquantel is cost effective. Dosage is 0.16 ml given orally once, and repeated in 14 days. Round worms are best treated with Valbazen 1/2 ml once and again in 10 days, or SafeGuard Liquid Goat Wormer 1/4 ml per pound given for 5 days in a row. Ivermectin has lost it’s effectiveness on worms in recent years.