Function of pair duets in the eastern whipbird: cooperative defense or sexual conflict?
Paired male and female eastern whipbirds, Psophodes olivaceus, sing precisely coordinated, male-led duets. Four broad explanations have been proposed for the function of duets: 1) cooperative resource defense, 2) prevention of partner usurpation, 3) defense of an individual's own position within the partnership, or 4) mate identification and localization. These 4 hypotheses make different predictions about how male and female residents should respond to simulated intrusion by other pairs or...[Show more]
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