Question

give reason a woodpecker can easily make a hole in a tree with its beak

Answer 1

Due to their smaller bill size, many piculets and wrynecks will forage in decaying wood more often than woodpeckers.

Answer 2

We know thw smaller the surface area, larger the pressure. Woodpecker has a small beak, thus it can drill holes in the trees, with it's beak.