RSPB Coconut Treats with Mealworms. A best-selling bird food! Who gets more pleasure out of these, the blue tits, long-tailed tits and other beautiful species who devour them - or you watching them clinging to a suspended coconut shell, contentedly pecking at its contents? Each easy-to-hang shell contains a nutritious mix of our premium suet, seeds and cereals, and weighs around 275 g. Supplied in a recyclable cardboard box - perfect for refilling your existing bucket. Filled in the UK. Most garden birds will eat many different foods. Here's a quick guide to the birds that particularly enjoy this food, though other species may also enjoy it too: Coal tit, Blackcap, Blue tit, Great tit, Great spotted woodpecker, long tailed tit, starling.