SUMMARYSmith, G. T. 1974. An analysis of the function of some displays of the Royal Penguin. Emu 74: 27–34.The paper analyses the function of six displays of the Royal PenguinEudyptes chrysolophus schlegeli.The Flag display is considered to be a territorial advertisement and is primarily a male display. It also functions in attracting females to an unmated territorial male. The Head Wobble display reduces the probability of attack in mates and neighbouring birds. It frequently precedes the Flag display and allows it to proceed without interference. It also communicates the sexual state of a bird. The Rounded-Neck Wings-Forward and the Neck-Horizontal Wings-Forward displays also reduce the probability of attack. The former allows a bird to approach another closely and the latter allows the bird to reach a position where the former can function. The Long Curved Stand is a mild territorial advertisement and greeting display given by a territorial bird toward‘new’neighbours. The Threat display maintains individual distance and territory. The ecological significance of these displays is discussed.