The Cairns Birdwing.
FZ200
The Cairns Birdwing (Ornithoptera euphorion) is a species of birdwing butterfly endemic to northeastern Australia, and is Australia's largest endemic butterfly species. Other common names include Cooktown Birdwing and Northern Birdwing.The name Cairns in its common name is a reference to the Australian city in the region where this butterfly is found. Original public domain image from Flickr