There are three species of heron known in the world: heron heron heron subspecies heron named subspecies herder five years ago. The author has also found an unconfirmed new heron and heron. The biggest difference among the three existing herons known is that the heron's sub-adults will participate in the breeding of the parents (that is, the sub-adults will assist the parents to complete the breeding together). This behavior pattern of herons has been observed. Five years
