Cj Wildlife Hi Energy Nut Cake Tubes Are A Great Source Of Essential Fats And Calories For Your Garden Birds. Our Hi Energy Nut Cakes Are One Of The Highest Calorie Foods That We Produce And Are A Phenomenal Success With Garden Birds. Formulated From Animal And Vegetable Fats And Bound With Peanut Flour And Maize. They Have Proved Irresistible To A Wide Range Of Species. These Cakes Can Be Fed Either From The Hanger Or A Feeder, Or Chopped Up On A Table. They Can Also Be Chopped Into Small Pieces (1Cm Cubes) And Scattered Around The Edge Of Your Feeding Area To Give Smaller And More Timid Species (Such As Dunnocks, Wrens And Blackbirds) A Chance To Enjoy Them.