RFI Powerful Owl Sydney and Plum-headed Finch

Hi everyone, Peter Waanders and I will be in Sydney on Wednesday and I was wondering if there currently are Powerful Owls in the Botanical Gardens? Or at an other accessible spot in or near Sydney? We will then drive up to Newcastle for the BirdLife Photography camp-out. Another possible lifer in that area that I still need some info on, is Plum-headed Finch. Does anyone have any sites for these along the way? Any info would be greatly appreciated, Cheers, Helga Kieskamp