Woodpeckers are beneficial birds.

Besides destroying pests under the bark of trees, their chisel marks also serve as indicators of sanitary forest harvesting.

They forage for pest insects such as aspen, giddyups, turnip moths and stinkbugs and can eat about 1,500 of them per day.

Because of their large diet and wide range of activity, a pair of woodpeckers roosting in a 13.3 hectare forest can eat more than 90% of the giddy worms in one winter.

Woodpeckers are known for cutting holes in trees and destroying insects.

Most woodpeckers spiral up tree trunks in search of insects and spend their entire lives in the woods in this way.

Only a few perch on horizontal branches, such as on the ground to feed on finch-like red-headed woodpeckers.

Most woodpeckers feed on insects, but some species prefer to eat fruits and berries, and sap-sucking woodpeckers generally suck the sap from certain trees during certain seasons.

In spring, the loud call of the woodpecker is an indication that the male is occupying territory, often amplified by pecking at empty trees or occasionally striking metal.

In seasons other than spring, woodpeckers are usually quieter.

Woodpeckers are rarely seen in groups and are generally solitary or in pairs.

The size of woodpeckers can vary greatly depending on their species, ranging from a dozen centimeters to more than 40 centimeters.

For example, there are Pileated Woodpeckers that are about a dozen centimeters long, and North American Black Woodpeckers that are about forty centimeters long.

Woodpeckers are able to jump between tree trunks and branches with amazing agility.

The woodpeckers' ability to stand firmly on vertical tree trunks is related to the structure of their feet.

This is because woodpeckers have two of their four toes facing forward, one facing backward, and the other facing to the side.

Thus forming a solid triangle with sharp claws at the tips of their toes.

Woodpeckers have stiff tail feathers that support their trunks and provide additional support for their bodies.

They usually dart their beaks around the trunk to find insects hidden in the bark.

Once they locate the insect, their hard beaks dart to carve a small hole in the tree and rush to catch the insect with their long tongues.

The woodpecker's beak is so straight and pointed that it can peck away not only the bark but also the hard wooden parts, much like a woodworking chisel.

Its tongue is slender and soft, sticking out of the outside of its mouth for a long time, with a pair of long horned bones that surround the outside of the skull and act as a special spring.

Whisker hooks and mucus, ideal for hooking insects and larvae on tree trunks