NatureServe 40lbs duck pellets with essential oils is a non-medicated feed that provides optimum nutrition for healthy ducks and geese. A complete pelleted feed for balanced nutrition in every bite with no need for supplementation. Specially formulated with essential oils, prebiotics and probiotics to help with immunity and digestive health. Fortified with calcium, vitamins and minerals for healthy birds. Essential oils of cinnamon, oregano and white thyme to help support immunity.