1. The mouth is as stiff as a chisel;

2. The tongue is long and flexible, with short hooks at the apex;

3. The feet are slightly shorter, with 4 toes, 2 toes forward and 2 toes backward;

4. The tail is flat or wedge-shaped, and most of the tail feathers are 12. The feather stems are hard and elastic, which support the body when pecking wood;

5. The acorn woodpecker is about 20 cm long. The red-headed woodpecker is similar to the acorn woodpecker in length, about19 ~ 23 cm. Different species of woodpeckers vary greatly in size, ranging from more than ten centimeters to more than forty centimeters. For example, the velvet woodpecker is about 15 cm long and the North American black woodpecker is about 47 cm long.

characteristic

Woodpeckers have a long, hard, pointed mouth, which rattles on the trunk and can accurately find the hiding place of pests through sound;

Woodpeckers knock on trees about 500 ~ 600 times a day, and peck at wood very frequently.

Woodpecker is a famous forest beneficial bird, in addition to killing pests under the bark, such as longicorn larvae.

Woodpecker is a famous forest beneficial bird. Besides killing pests under bark, such as longicorn larvae, its chisel marks can be used as an indicator of forest health logging. It is a common resident bird, and the widely distributed species in China are green woodpecker and spotted woodpecker. They feed on insects such as longicorn beetles, brown beetles, winged moths and stinkbug worms, and can eat about 1500 every day. Because woodpeckers eat a lot and have a wide range of activities, in the forest of13.3 hectares, if a pair of woodpeckers inhabit, they can peck at more than 90% of the insects in a winter.

Woodpeckers can be seen except in Oceania and Antarctica. It is distributed all over China. Some go east through Germany and Russia to Japan, and south to Alps, Balkan Peninsula, Southeast Asia and other places.

Red-backed woodpeckers are found in forests from India to the Philippines. Green woodpeckers are found in warm regions of Europe and the African continent. The red-bellied woodpecker is found in the deciduous forest belt in the southeastern United States. Emperor Woodpecker and Tristram Woodpecker are endangered animals. The white-bellied black woodpecker distributed in Sichuan, Yunnan, Fujian and other places in China is a national second-class protected animal.