Zoo Med Avian Plus Bird Vitamins Zoo Med’s Avian Plus vitamin and mineral supplement for birds is milled to a very fine powder for maximum adhesion to seeds. It has a calcium base to ensure healthy bone development in juveniles, strong shells, and proper calcium metabolism in breeding females. The first bird vitamin to include the complete amino acid complex for enhanced plumage and proper protein digestion. Features orange flavoring for bird appeal with no preservatives. Product Features: Vitamin and mineral supplement for birds is milled to a very fine powder for maximum adhesion to seeds. Features orange flavoring for bird appeal with no preservatives. It has a calcium base to ensure healthy bone development, strong shells and proper calcium metabolism in breeding females. Item Specifications: Size: 4 oz 8 oz