On a much better note this is a Great Egret (Ardea alba) is the tallest Egret in Australia and at certain times of the year can be found over anywhere in the country. It can be as tall as a 1m and has a wing span of abut 1.5 meters. By all measures it's a large bird.
This bird was splitting its time between fishing and posturing at another of its kind in the waters just outside of Mamukala hide in Kakadu National Park. Unfortunately, the two birds never came close enough to each other to get a good picture of both. Oh well.