Found some (I presume) a few male 'Superb fairy-wren' tail feathers when weeding before:
Lots a fluff around so something went down (probably resident magpie having a go at it). Apparently a common bird but I never really see them (or found their feathers).
There's a small colony of them in the central Agora of the Bundoora campus of Latrobe Uni. They live in the azalea bushes. When I worked in Heidelberg Heights, I'd go to the Agora and just sit there with a coffee until they appeared. Beautiful.