Wild Bird Trading Co. have formulated two different “Seasonally Adjusted” blends to fit the needs of different birds’ needs during different times of the year. Seasons Woodland® has these features. Each season, we combine dozens of different ingredients to provide the birds with the best possible nutrition available. The spring formulation is high in protein for muscle development and stamina (migration, breeding & food collection for their young). It contains fruit for migratory fruit eating birds. It contains oyster shell to help digestion and add needed calcium for egg production; micronized ingredients are added to convert the sugars and make these  ingredients digestible. The winter blend is high in carbohydrates to keep birds warm. Summer blend accommodate birds that stay for the summer. Each season these mixes are changed to accommodate the birds and their environment. Made with Non-GMO ingredients.