Mystery parrot

On first inspection, this Esplanade Park claw-gripper looks well enough like a galah.

But he hangs around all day with a ground-dwelling flock of Cacatua pastinator. He also hops around and carries on more like a pastinator than a galah, and is bigger than your average galah.

Hazel, who snapped him, and I think he's the product of unholy union.
But oh, what a union!