Some are designed for opening seeds, while others are designed for catching fish or even tearing flesh to eat a small animal. Some birds, such as the eagle and the hawk, have a very sharp beak designed to tear the flesh of small animals that they eat. Birds such as the woodpecker's have a beak designed to pound holes in trees to get bugs. The pelican's beak is well design to help it catch fish. It can scoup fish out of the water just like a fishing net.
Many birds have strong beaks designed to crack open hard seeds.
Some bills are designed to eat worms. The hummingbird's beak is well design to help it get nector from flowers.