A male Gang-gang Cockatoo was perched near a hollow about two-thirds up in a tree. He was sitting there silently. He seemed to notice my interest and moved slightly away from the hollow. After a few minutes he flew south to another tree. He stood there very quietly, and although I scanned the tree, I could not see a female. As luck would have it, while I bent down to make some notes, the female appeared. Because I was not looking, I am not sure if she flew from another tree, possibly the first tree, or appeared from a hollow in this tree. Both birds were reasonably quiet in this second tree. I noted later, while looking at the photographs, that her left eye possibly had some half-red feathers around it. Both birds stayed in the tree for a little while before first the male, then the female, flew to the south-west, out of sight behind some trees. (Hollow not on spreadsheet)