A natural treat for all caged and outdoor birds. Naturally grown millet sprays for parakeets, canaries, finches, cockatiels and wild birds. Hartz Nutrition Millet Spray is a naturally grown treat for all seed-eating pet birds. These millet sprays have been carefully harvested to retain nature's bounty. Even wild birds will love them - especially in the winter months when food is hard to find. Since seed trees are naturally grown, they will vary in size, shape and color.