There are more than 20 different types of seeds found in birdseed.  The seed that is by far the seed that is most favored by backyard birds in Georgia are black oil sunflower seeds. The list of birds that prefer this nutritious seed includes the Carolina chickadee, tufted titmouse, pine siskins, woodpeckers, evening grosbeak, northern cardinal, rose-breasted grosbeak, as well as purple and house finches.