Attracts: Jays, Orioles, Wild Ducks and Wild Geese. Birds will frequent your feeders more often and stay longer if you provide a consistent, reliable source of high-energy seeds and blends from Armstrong. Made up of black soldier fly larvae which contains 16 times more calcium, providing a high source of fat and protein. It supports stronger eggshells and healthier feathers. Compatible with feeders with large openings such as hopper feeders, window feeders and tray feeders.