 The male selects a nesting site and presents an overt display—presumably to entice a female—of an inflated pose and issues a rendition of its identity call, interspersed with hopping movements about the branches.The male may continue these gestures for up to forty five minutes, perhaps utilising a length of grass (200–450 mm) that appears to be pierced but is actually held at the point of the bill by a fibre pulled from the base of the stalk.The grass prop—symbolic of nest construction and copulation according to the ethological interpretation of Immelmann—is dangled downward as the male presents the prospective site.