Sexual selection, breeding behaviour and song communication in house wrens (Troglodytes aedon)
Kaluthota, Chinthaka D.
University of Lethbridge. Faculty of Arts and Science
Lethbridge, Alta : University of Lethbridge, Dept. of Psychology
Elaborated male displays, such as the complex songs of some songbirds, are thought to have evolved via processes of sexual selection addressing two main functions: attracting mates and repelling rivals. House Wrens (Troglodytes aedon) are a good model species because, while not yet systematically studied, the species’ song is noted for being elaborate and complex. The first step in research was to establish basic patterns of male breeding success under natural conditions. The second step was to provide a detailed characterisation of song organisation and diversity and begin to identify dimensions of song performance and complexity likely relevant in female choice of male partners or in male defence of territories against rivals. The final step involved a broad-scale latitudinal study of song patterns across the Americas testing the relevance of these elements of sexual selection on song performance and complexity in House Wrens.
Sexual selection , Communication , Bird song , Song complexity , Nesting ecology , Song performance