We have recorded a staggering number of birds feasting on sunflower hearts. Even \'non seed-eating\' birds such as thrushes, Robins and Blackbirds, who generally have difficulty opening the hard outer husks, have been seen merrily feeding away. Chosen from bakery and confectionary grade stock, CJs premium hearts are the plumpest, most complete hearts with all the husks removed.   During winter a Blue Tit can spend up to 85% of the daytime feeding just to survive. By feeding sunflower hearts, time spent cracking open the black sunflower husk is eliminated, enabling birds to save valuable time and feed more efficiently.