Thanks - Is this the same tree as https://canberra.naturemapr.org/sightings/4356573? If so then I think when I tried to check the hollow late last year I was looking at the wrong hollow.
I don’t think I’ve recorded a sighting in this tree before - I couldn’t actually access the sighting you referenced for some reason. This tree is just inside the boundary of FGC slightly to the right & above where it is marked on the map.