Johnston & Jeff Black Oil Sunflower Seeds - 12.75kg The Johnston and Jeff Black Oil Sunflower Seeds are selected and harvested for maximum oil content, which means they are high in energy for a variety of wild birds. Black oil sunflower seeds must be harvested when they are fully matured to ensure there isn't any empty husks, but can't be done late because that produces a high acid content. Johnston & Jeff triple screen and grade their Black Oil Sunflower Seeds to ensure they are of the highest quality and add vegetable oil to give them a high shine which makes them easier for the birds to spot and provides extra nutrition.  If this bag isn't quite the right size we also have Johnston & Jeff Black Oil Sunflower Seeds - 750g available. Black Oil Sunflower Seeds are best fed from a Bird Feeder or Bird Table. Browse our selection of Bird & Wildlife Care to find a whole range of seed blends, peanuts and suets perfect for attracting a variety of species. Charlies is an independent, family-run business selling over 90,000 different products which help you enjoy your home, garden and time outdoors. Over 44,000 reviews, rated 'excellent' on Trustpilot! Free standard delivery over £75. Priced fairly all year round so you're never out of pocket.