Two. One of them stayed on one tree for a while then flew to the other on the corymbia. People around 3. 5.28 two of them flew arond the tree. The third one flew to another tree. They haven't moved or sung for 10min. 5.50 another one flew to here. River redgum. 14 degree Celsius. 5.58 one started calling. 18.06 two more flew over. 18.10 one sing. This spot was silent from 18.10. From 18.18 birds are heard from far away. 18.28 two birds flew to a tree with same species nearby. 18.30 Three flew over( didn't count in the six) 18.34 Three more flew away. Silent from 18.34.