Tidy Seed No-Mess Bird Feeder NO MESS - GUARANTEED! This feeder does away with scattered seeds and hulls. Some feeders have claimed "no scatter" - this one actually works. You bird enters and eats, leaving hulls and uneaten seed behind in the trough-like compartment below! This small crystal-clear acrylic feeder is expressly designed for birds as small as finches and canaries to green cheek conures, parrotlets, and Lovebirds to cockatiels It eliminates costly waste: You'll save money on seed that didn't end up soiled on the floor, underneath the grate or outside of the cage.Hooks included, just hand tighten and hang Hang the feeder inside or outside of the cage. Dimension: ~ 5" HIGH x 5" WIDE x 4" DEEP"- Please measure your feeder door to insure that the Tidy Seed Bird Feeder will fit appropriately for outside the bird cage use.