#LES TYPES DE STROPHES SERIES#

Secondly, I tested the hypothesis that tui song complexity would be higher at dawn than at solar noon and dusk. Furthermore, after controlling for phylogenetic relatedness, a significant positive association between extra-pair paternity frequency and within-song complexity was found across multiple species.

Concordant with the predictions, tui broadcast songs were found to have higher complexity than interactive songs. This was conducted across 78 songbird species, the most comprehensive analysis in this study area to date. In addition, it was predicted that there would be a positive association between song complexity and extra-pair paternity frequency. Firstly, the hypothesis that song complexity in songbird broadcast songs would be higher than in interactive songs was tested. A socially monogamous songbird with highly complex songs and high extra-pair paternity (tui, Prosthemadera novaeseelandiae) was selected as the main study model.

#LES TYPES DE STROPHES SERIES#

In this thesis, hypotheses examining song complexity variation and a series of biological and environmental factors were tested. Examining variation in song complexity provides important insights into the evolution of sexually-selected vocal characteristics. Females of some species preferentially select males that have more complex songs, an honest signal for male fitness. In songbirds, song is important for mate attraction and territory defence.

Les types de strophes