as in, do they grow faster together? or are they more complete nutritionally? They do grow well together. The mix is mostly based on what I could find locally at a reasonable price, and still give them a nice variety of seeds. I like that it includes a legume as well as grains. It was less a scientific compilation of feeds, and more a concern that they not be getting only one variety. I feel like if they're getting several different varieties of both legumes and grasses they're likely to be getting a more balanced set of nutrients. Fodder, for me, is primarily something I give to fill in gaps in nutrition in birds that have limited acess to good free range. Chicks in the brooder, meat birds confined to tractors. So I want to be sure that they get some variety in their diet. And of course, the parrots get sprouts and/or fodder which they enjoy, and for them a variety of foods is key, partially to prevent boredom.