Audubon Black Oil Sunflower Seed

Bottom Line

While the National Audubon Society 40-lb Signature Harvest Black Oil Sunflower Seed attracts a wide variety of birds and offers a practical carrying solution, noteworthy quality concerns have surfaced, including excessive debris, fillers, and potential insect contamination. If you're considering purchasing these seeds for your avian friends, keep in mind the prevalent cleanliness issues and the fact that 20% of the bag may not be usable. If quality seeds are a priority, you might want to explore other brands.