I'm sorry to hear your macaws didn't take to the diet right away. Many birds are reluctant to switch to new food, especially pellets, but it's worth it to know your bird is getting a healthy complete and balanced diet! A gradual changeover and some simple strategies can help your bird learn to love the Mazuri diet. •Start with 90% seed (or current diet) and 10% Mazuri® Diet. On each succeeding day, reduce the amount of seeds/old diet by 10% while increasing the amount of Mazuri® Diet by 10%. •Finely grind some of the extruded food and sprinkle over your bird's normal seeds or a favorite treat to try to get the bird to taste new diet. •Try moistening the extruded diet and remove any left over after a couple of hours due to the risk of spoilage. •Try hand-feeding the new food so your bird thinks it’s a treat. •Offer the formulated, complete diet in the morning and reserve the supplemental seeds, veggies and fruits for the evening, after your bird has eaten its extruded diet. If you'd like to talk through further, please reach out to us at info@mazuri.com and we'd be happy to help troubleshoot.