Steven David Miller / A male Australian King parrot (Alisterus scapularis) standing in a tree fern, Cania Gorge National Park, Queensland, Australia.

Steven David Miller / Australian king parrot (Alisterus scapularis), male eating berries of shrub. Lane Cove National Park, Sydney, New South Wales, Australia.

Jiri Lochman / Red winged parrot (Aprosmictus erythropterus), Purnululu National Park UNESCO Natural World Heritage Site, Western Australia, Australia.

Jiri Lochman / Red winged parrot (Aprosmictus erythropterus) consuming Wattle seeds, Purnululu National Park UNESCO Natural World Heritage Site, Western Australia, Australia.

Oriol Alamany / Australian King Parrot (Alisterus scapularis) male, Lamington National Park, Rainforests of Australia UNESCO World Heritage Site, Queensland, Australia

Oriol Alamany / Australian King Parrot (Alisterus scapularis) male, Lamington National Park, Rainforests of Australia UNESCO World Heritage Site, Queensland, Australia

Roger Powell / Regent parrot (Polytelis anthopeplus) feeding on border of flower bed in parkland, Cleland, South Australia

Juergen Freund / Australian king parrot (Alisterus scapularis) perched on branch, Atherton Tablelands, Queensland, Australia.

Roland Seitre / Superb parrots (Polytelis swainsonii) pair, standing on the ground foraging among dead branches, New South Wales, Australia.

Roland Seitre / Superb parrot (Polytelis swainsonii) flock in flight in fog, New South Wales, Australia.

Roland Seitre / Red-winged parrot (Aprosmictus erythropterus) natural pied mutant colour morph, landing in farmland to feed, Northern Territory, Australia.

Roland Seitre / Moluccan king parrot (Alisterus amboinensis) perched on branch, Ambon, Indonesia. Captive.