Recently, the white-tailed eagle, a national first-class protected animal, appears in Dalian City, Liaoning Province, which has attracted widespread attention among bird researchers and nature enthusiasts. The white-tailed eagle, sometimes known as the “sea eagle”, has brown body plumage with a conspicuously pale head and neck, which can be almost white in older birds, and the tail feathers of adults are white. In flight it has massive broad wings with “fingered” ends. Its head protrudes and it has a wedge-shaped tail.