Each year during Moomba, to raise money for charity, a group participates enter one of two categories, Penguin or Hawk Class.

Birdman Penguins are judged on the creativity of their costume and Birdman craft, pre-flight performance and the distance flown.

Hawk category are serious and more technical, competing to fly the longest distance in their self-built and designed craft. Usually there are a couple that will enter this particular category.

When you see the craft enter on the platform, you immediately get an idea which class they are competing in.

For the Birdman Penguin, for every $100 raised over and above the $500 minimum, Birdmen are awarded an extra metre to their technical flight distance.