"King of birds" is not a general academic term or biological term, so no specific species of bird is called "king of birds." The word may be a character that appears in some story, myth, or cultural legend. In different cultures and regions, the image and meaning of "Bird King" may also be different.
For example, in traditional Chinese culture, the phoenix is regarded as the "king of birds" and symbolizes luck, beauty and power. In European medieval legends, the swan was often called the "King of Birds" because of its nobility and ability. In the legends of some African tribes, a bird named "Scoop Duck" is considered the leader of all birds. In short, the term "bird king" does not refer to a specific bird, but is a symbolic concept.
