Kaytee Cardinal Blend offers a premium mix of the foods cardinals enjoy most, such as black oil sunflower and safflower. The high oil content of this mix is highly desirable to songbirds. If squirrels are at your feeders, the bitter taste of the safflower seeds can help to discourage them. This blend is also attractive to chickadees, nuthatches and grosbeaks for plenty of bird watching opportunities right from your backyard window.