These are bakery grade kernels produced from black oil sunflower seeds This means they are from the sunflower which contains the highest levels of oil and therefore energy rather than the confectionery grade hearts which are mainly taken from medium and large striped sunflower Our sunflower hearts are also put through a sortex machine which uses lasers to colour detect any black husk still remaining so producing a uniform and totally husk free sample Suitable for: Virtually all birds with the exception of maybe Pipits and Wrens which may take these if mealworms and insects are not available Calorific Value: 640 kcals/100g Typical Protein: 24.0 %