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Physiological Adaptations for Breeding in Birds$
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Tony D. Williams

Print publication date: 2012

Print ISBN-13: 9780691139821

Published to Princeton Scholarship Online: October 2017

DOI: 10.23943/princeton/9780691139821.001.0001

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Timing of Breeding

Timing of Breeding

(p.52) Chapter 3 Timing of Breeding
Physiological Adaptations for Breeding in Birds

Tony D. Williams

Princeton University Press

This chapter argues that the timing of the initiation of a single breeding event, or the initiation of the first of multiple breeding events within the same breeding season, is completely dependent on the female-specific reproductive process of timing of egg production and egg-laying. It discusses how early-season events are critical in determining timing of breeding; fitness consequences of timing decisions; selection on timing of breeding; sex-specific response mechanisms for timing of breeding; physiological mechanisms associated with photoperiod (day length) as a proximate factor; physiological mechanisms associated with temperature as a proximate factor; and physiological mechanisms associated with food availability as a “proximate” factor.

Keywords:   avian reproduction, breeding events, breeding season, female reproduction, photoperiod, food availability, temperature

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