ZuPreem AvianBreeder Diets are nutritionally rich extruded diets designed to support the reproduction stages of psittacines hookbills. Contains higher levels of protein fat and calcium is nutritionally complete and requires no supplements. AvianBreeder FruitBlend Flavor Diets contain five differently colored fruit-shaped extruded nuggets. Individual fruit shapes are maintained where nugget size allows. Cockatiel nuggets are round and perfect for smaller species.