Introduction: The Great Swan is a migratory bird with no subspecies differentiation, tall body, body length 120-160cm, wingspan 218-243cm, body weight 8-12kg, life expectancy 20-25 years. The mouth is black, the mouth base has a large yellow color, and the yellow color extends to the side edge of the upper jaw. Inhabits the open, shallow waters of aquatic plants. Sexually alert, timid, and good at swimming.