Black sunflower seed is one of the more universally taken seeds among garden birds, which is why it's often sold as its own straight rather than being diluted into a mixed blend that some birds pick through and reject.

This is exactly that: black sunflower seeds on their own, with no other grains or fillers, sold in a large 12.75KG sack. Bucktons position it as a straight for anyone running a dedicated sunflower feeding station or wanting to top up a large hopper without buying it pre-mixed.

• A single-seed straight of black sunflower seeds, not a mixed blend
• Sold in a 12.75KG sack
• No composition breakdown or nutritional analysis supplied
• No storage or use-by guidance supplied

What's missing here. Beyond a general claim of quality raw materials from reputable growers, Bucktons haven't given us a nutritional analysis, an oil content or a recommended feeder type for this seed — it's one of the thinner cards in the range, and what you're buying is the seed itself rather than a documented product.

Who it's for: anyone running a black-sunflower-only feeder, or filling a large hopper with a seed that's rarely rejected by garden birds.