Robin and Wren Blend 12.5kg sack is a special mix formulated for some of our most popular garden birds. High energy freeze dried mealworms are added to a mix of sunflower hearts and jumbo wholemeal porridge oats to give a special high calorie, high protein treat. Place loose on a bird table or on the ground, ideal also for a window mounted feeder. 550cals per 100g. A firm favourite with Robins.