The red-crowned crane (scientific name: Grus japonensis) is a type of crane, a large wading bird with a body length of 120-160 cm. The neck and feet are long, the whole body is mostly white, the top of the head is bright red, the throat and neck are black, the ears to the headrest are white, the feet are black, the neck, tail and feet are black when standing, and the top of the head is red, and the rest are all white; The secondary and tertiary flying feathers and the neck and feet are black, and the rest are all white. The features are very obvious and easy to identify. The head and neck of the young bird are brown, and the body feathers are white with chestnut color. Often in pairs or in family groups and small groups. During the migration season and winter, several or dozens of family groups often form larger groups. Sometimes there are as many as 40-50 or even more than 100 in clusters. However, the activities are still scattered into small groups or family groups in a certain area. At night, they live on shallows or reed ponds surrounded by water. They mainly feed on fish, shrimp, aquatic insects, mollusks, tadpoles, sandworms, clams, snails, and stems, leaves, tubers, bulbs and fruits of aquatic plants. Distributed in northeastern China, eastern Mongolia, the east bank of the Ussuri River in Russia, North Korea, South Korea and Hokkaido, Japan.