There was a group of three or four Gang-gang Cockatoos. They were near an area where Gang-gangs have bred in the past but not actually at a tree used last season. There were at least two males, an adult and a juvenile. The two males were sharing a branch for a while before the adult chased away the juvenile. The juvenile bird did not go far but the adult assumed the higher position in the tree. I saw two females, but not at the same time so I am unsure if they were two separate birds or the same bird in two different locations.