This is not a quoll but it is Australian. It is a (wild) 28 parrot, a subspecies of Australian ringneck. The 28 is found in the southwest of Australia and is distinguished from other Australian ringnecks by the red patch above its beak. They have been welcome visitors for many thousands of years in this part of the world.
This is not a quoll but it is an Australian predator. It is a southern boobook owl, or just “boobook” for short.
Boobooks have a distinctive falling two-toned call. Like all hawk-owls, they often look annoyed or hung over.
This is not a quoll. It’s a royal spoonbill being regal and spoon-shaped of face.
This is not a quoll. It is a tawny frogmouth. They are best known for their impressive camouflage and huge mouths.
High res versions here.
These are not quolls. These are nankeen night herons. Because apparently Tumblr likes nankeen night herons.