What wild birds eat depends on the type. There is tremendous variety between the different families of birds. Some birds eat only insects or seeds. Others are true omnivores that devour nearly anything. Birds forage, hunt and rely on humans for food....
Wild birds make use of their surroundings. Many will eat insects, berries, seeds and worms as a large part of their diet. They will also make a quick meal of birdseed that is left for them in a feeder.