Birdie Bell Only. The Birdie Bell is a versatile and easy way to provide just the things your birds need at the right time of year. Bring more birds into your yard by refilling your Birdie Bell with Songbird Essentials Nesting Material (SEWF91009) during the Spring and early Summer. Perfect for Bluebirds, Robins, Orioles, Finches, Wrens, and Chickadees over 50 species of North American birds. Just push the clip on bottom of this versatile all-weather holder to open the bell to place. Will hold seed bells, fruit (orange halves, apple slices), nesting material, and suet.