Hi Illanga Gang-gang breeding behaviour begins towards the end of September - a guide as to what behaviour to look out for re finding possible Gang-gang nest hollows is at this link http://redhillregenerators.org.au/wp-content/uploads/2022/07/Gang-gang-tell-tale-nesting-behaviours-Mulvaney-Tyrell-Davey-2022.pdf
Thanks Michael. Some great info! So far we only have them visit occasionally. Mostly to gorge on the spitfires. But we have plenty of hollows, so they would be most welcome to nest with us. :)