This Mixed Seed Bell by Pine Tree Farms comes in a colorful net to attract various kinds of birds to your backyard. The seed bell is easy to use and is packaged to be hung easily in a tree, shrub or on a post. Made of a variety of high quality seeds. Pine tree farm s seed bells are a great way to attract birds into your yard. Seed bells are packaged with colorful net that is ready to hang on trees and shrubs. Black Sunflower Seed, Striped Sunflower, Seed, White Millet, Cracked Corn.: Size: 16 oz.