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A reprint of a classical work in the Princeton Legacy Library, originally published in 1995.
The purpose of Polygyny and Sexual Selection in Red-Winged Blackbirds is to explain why red-winged blackbirds are polygynous and to describe the effects of this mating system on other aspects of the biology of the species. Polygyny is a mating system in which individual males form long-term mating relationships with more than one female at a time. The authors show that females choose to mate polygynously because there is little cost to sharing male parental care in this species, and because females gain protection against nest predation by nesting near other females. Polygyny has the effect of intensifying sexual selection on males by increasing the variance in mating success among males. For females, polygyny means that they will often share a male's territory with other females during the breeding season and will thus be forced to adapt to frequent female-female interactions.
Polygyny and Sexual Selection in Red-Winged Blackbirds reviews the results of many studies by other researchers, as well as presenting the authors' own results. Studies of red-winged blackbirds have ranged from long-term investigations of reproductive success and demography, to research on genetic parentage based on modern molecular methods, to a variety of experimental manipulations of ecological circumstances and behavior. Since the red-winged blackbird is one of the best studied species of any taxa in terms of its behavior and ecology, the authors have a particularly extensive body of results on which to base their conclusions.
List of Figures and Tables
1 Introduction 3
2 Parental Care 26
3 Territoriality 50
4 Female Reproductive Success 77
5 Female Choice of Breeding Situation 100
6 Polygyny 133
7 Sexual Selection in Progress 160
8 Adaptations for Sexual Selection 195
9 Polygyny, Sexual Selection, and Female Red-winged Blackbirds 231
10 Conclusions 259
Common and Scientific Names 279
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