Larger birds will utilize a feed mixture that contains corn as this Blue Jay demonstrates. The Jays will collect as many kernels as possible before retreating to a tree where they can peck them into smaller pieces. This Jay perched just a few feet from the end of my lens as it displayed its beak full of food.
Red-bellied Woodpeckers like the female pictured here also utilize corn. Unlike the Jays they are contented to gather the kernels and break them up one at a time.