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Behavioral Ecology and Sociobiology

, Volume 20, Issue 1, pp 35–42 | Cite as

Male characteristics, parental quality and the study of mate choice in the red-winged blackbird (Agelaius phoeniceus)

  • Christopher G. Eckert
  • Patrick J. Weatherhead
Article

Summary

A demonstration of adaptive mate choice by females in resource-defence mating systems requires clear predictions as to how females should rank “breeding situations” (defined by the quality of both the resident male and the territory he defends) so as to maximize their fitness. Since male quality is only weakly correlated with territory quality in red-winged blackbirds (Agelaius phoeniceus), ranking breeding situations in this species will require a consideration of both those parameters independently of each other as long as both vary among males, are predictable before mating, and affect female fitness. Data from a two year study of an eastern Ontario population of this species suggested that two components of male parental quality, nest defence effort and provisioning of nestlings with food, both varied among males and were somewhat predictable. Two measures of nest defence effort were correlated with an index of epaulet size (a reliable predictor of captive dominance rank in this species) (Table 5), and provisioning appeared to be predictable on the basis of both courtship behavior and breeding experience. Our data also suggest that these two components of male parental quality do not covary. Since male provisioning tends to be restricted to the nestlings of the primary and secondary mates in this species, breeding situations must be ranked not only with respect to their manifold quality but also with respect to the mating status of individual females.

Keywords

Mate Choice Courtship Behavior Dominance Rank Male Quality Resident Male 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • Christopher G. Eckert
    • 1
  • Patrick J. Weatherhead
    • 1
  1. 1.Department of BiologyCarleton UniversityOttawaCanada

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