Bird's Beaks

A bird's beak does many of the things you would do with your hands. The bird uses it for catching or picking up food, building its nest, preening feathers, and even for defending itself.
The shape and length of its beak is related to the kind of food a bird eats. The most common beak is short and pointed. But look carefully and you will see that even this shape varies.
The goldfinch's finely pointed beak can pick ot the smallest seeds from thistles and other plants. Yet is must be thick and strong at the base to crack the seeds. Warblers, which feed on small, soft insects, have fine, pointed beaks.

Since birds don't hae teeth they have to swallow their food without chewing.
" Flamingos have very special beaks which work upside down sifting tiny shrimps out of the water"
Many fish-eating birds have long, straight, stabbing beaks  with sharp pointed ends. Gannets and kingfishers dive into the water to catch fish, while herons wait patiently for fish to swim within reach.
The merganser (a kind of duck) chases small fish under water. Its beak has "saw" edges to grip the slippy fish.

Waders find worms and tiny shellfish in mud and sand. The beak of each kind of wader is just the right length to reach the particular kind of creature it eats.

Eagles and all other birds of prey have strong hooked beaks for tearing their food into pieces small enough to swallow or feed to their young.

Hooked beaks are used by parrots in a different way. They use the sharp tip to tear the soft flesh from fruit and the strong inner part for cracking nuts and seeds.