A blue tit in cold weather gets through close to its own body weight in food across a single day just to keep its temperature up, which is the reason fat-based feeders do more for garden birds in winter than a scoop of seed on its own.

These are made from beef tallow, wheat flour, calcium carbonate, kibbled maize, naked oats, yellow and red millet, black rapeseed and coconut flavour, and Bucktons describe them as coconut feeders. They're sold as a complementary treat, in a pack of 15.

• Pack of 15
• Composition: beef tallow, wheat flour, calcium carbonate, kibbled maize, naked oats, yellow and red millet, black rapeseed, coconut flavour
• Coconut flavour
• Complementary treat, not a complete diet

What the label does not say. Bucktons don't specify the exact shape or format of each feeder — whether it's a moulded block, a half-shell, or something else — beyond calling it a coconut feeder, and there's no individual weight given for one unit. What you get is 15 of them in the pack.

Who it's for: anyone feeding garden birds through cold weather who wants a fat-based feeder rather than plain seed, and is happy to buy a pack of 15 at once.