Black-oil Sunflower Seeds

The most common type of seed offered at feeders in North America is black-oil sunflower seed. This small sunflower seed is high in energy and has thin shells, making it the preferred food item for a wide variety of birds. Black-oil sunflower is among the favorite feeder foods of cardinals, chickadees, finches, and sparrows. Woodpeckers even consume these seeds on occasion.