SUMMARYBrooker, M. G. 1974. Field observations of the behaviour of the Wedge-tailed Eagle. Emu 74: 39–42.The diurnal pattern of activity of the Wedge-tailed EagleAquila audaxis outlined and various patterns of behaviour are described. Though aerial displays are probably used to maintain territory, there does not appear to be any elaborate courtship display on perches or in the air. This suggests that such displays arc unnecessary in a long-lived species that forms long-lasting pairs.