If you only want to use one feed and attract the greatest variety of wild birds, then it"s blue ribbon blend bird seed all the way. A traditional mix done right, we guarantee you"ll get the best combination of perch and ground feeding birds with this one. Contains black oil sunflower, sunflower meats, white proso millet, cracked corn, canary seed. The birds primary source of nutrition. Comes in 5-pound plastic bag.