well it helps them break up the f00d
Pointy beak
The humming bird and woodpecker both have a long beak for their size. The kiwi has a particularly long bill, varying length from 9 to 30cm, depending on the species.
parrot
short and heavy
Heavy as in blunt, no. Heavy as in hard to lift, yes!
A parrot has a strong curved beak, specifically designed for cracking hard nuts and seeds.
smaller and longer and thiner and pointer beak
The beak can allow crushing of seeds and digging into the ground or vegetation for food
they have a curved or a hook shaped beak they use it for cracking nuts ,seeds and also for climbing
A beak that can dig into thick trees.
Cardinal
A sparrow has a multipurpose short hard and round beak. This is used for eating, digging insects, and cracking seeds