Chickadees at the Feeder

I was watching chickadees eating from the feeders by my kitchen windows. The seed is a mixture of cracked corn (which they always ignore), whole peanuts, peanut pieces, and sunflower seeds. They'll toss the whole peanuts out of the way and pick up a small piece of peanut or sunflower seed. The piece is transferred to between their feet where the bird will carefully peck at it, dislodging an even smaller piece that it will then eat. Other small birds will eat the small pieces whole, but the chickadees break up the food. I didn't realize they were such delicate eaters.