At 6.25 pm I was watching Tree 19 when I heard a saw a pair of Gang Gangs flying south along Red Hill ridge. They then turned west. I heard them in the vicinity of a tree that yesterday I had seen a male GG enter a hollow. I got to the tree at 6.30pm and observed a female on a branch 2m above the hollow. I could not see the male. At 6.35pm the female entered the hollow and came out 2 minutes later. at 6.40 the male emerged from the hollow and he and the female flew off to the west.