Northern cassowaries (Casuarius unappendiculatus) are large, flightless birds with striking blue neck and head skin and a single red-yellow wattle. They are formidable creatures with powerful legs and a dagger-like claw on each foot, and they can run up to 31 mph and jump up to 7 feet. Also known as the one-wattled cassowary, single-wattled cassowary, or golden-necked cassowary, it is endemic to the coastal swamps and lowland rainforests of New Guinea. The main difference between nothern and southern are:
the number of wattles: the northern has one and the southern cassowary has two.
neck colouration - the northern cassowary often has a large orange, red, yellow, or blue patch on its lower neck, while the southern cassowary has a more extensive blue colour down the neck.