Extra-group courtship displays and other reproductive tactics of superb fairy-wrens

Abstract

A behavioural study was conducted to investigate reproductive strategies of female and male superb fairy-wrens (Malurus cyaneus). Such strategies are of particular interest in this species because males and females form lifelong pair bonds, yet exhibit the highest documented frequency of extra-pair mating among birds. In this study, a conspicuous element of behaviour of males was the performance of a courtship display involving the presentation of a flower petal. This unusual display was performed exclusively (97%) for extra-group females during excursions into neighbouring territories by lone males, and appears to have evolved specifically for the purpose of soliciting future extra-pair fer..