Black Oil SunflowerBlack oil sunflower seeds are considered the number one choice to feed and attract the greatest variety of birds. This type of seed provides high amounts of energy and has a thin shell that is easy for even smaller birds to open. Black oil seed will attract bobwhites, chickadees, doves, finches, juncos, nuthatches, goldfinches, grosbeaks, Northern Cardinal, nuthatches, Pine Siskin, titmice, and woodpeckers.