Songbird Selections 1025127 Colorful Bird Seed Blend Wild Bird Food Bag, 12-Pound Exclusive formula has been proven to attract up to 2x more colorful birds Attracts fewer blackbirds, grackles, and cowbirds (results may vary by region and/or season) Stand-up SureFresh resealable bag with Easy Pour Spout for less spillage Developed by ornithologists using only high-quality ingredients--no added fillers For use in hopper, platform, and tube feeders