In my experience of observing birds in the Mt Lofty Ranges the Grey Currawong is most likely seen in the wetter parts of the Ranges. We live on the drier south eastern side of the Ranges & seldom see a Grey Currawong so it was with delight late this afternoon when I heard the echoing call of one.
Casual observation suggests that "our" biodiversity has taken a significant leap upwards in the last twelve months or so with increasing numbers of butterfly species, lizards & several new bird species being seen &/or heard. There have also been the reappearance of seldom seen species such as the above Grey Currawong & the Red-bellied Black Snake as well as more than usual observations of species such as the Boobook Owl. A significantly wetter than average year plus the ongoing maturity of our bush revegetation & regeneration are probably contributing factors.