Male and female golden whistlers respond differently to static and dynamic signals of male intruders
Wouter FD van Dongen, Raoul A Mulder
BEHAVIORAL ECOLOGY | OXFORD UNIV PRESS INC | Published : 2008
Bird displays vary widely in their sensitivity to changes in signaler condition. Plumage ornaments are generally static and undergo minimal change. Behavioral ornaments, by contrast, are dynamic and may track signaler condition or motivation more closely. The relative importance of each trait type in signaling individual quality has been examined during female choice, but rarely in territorial defense. Male golden whistlers (Pachycephala pectoralis) display both a static plumage signal (throat patch) and a dynamic signal (song) during territorial disputes. We examined sex differences in the responses of territorial pairs to these traits during simulated territory intrusions by decoy males th..View full abstract
Holsworth Wildlife Research Fund; Loftus-Hills Memorial Fund; Stuart Leslie Bird Research Award; David Hay Memorial Fund.