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Behavioral Ecology and Sociobiology

, Volume 33, Issue 5, pp 297–304 | Cite as

Interference asymmetries among age-sex classes of rufous hummingbirds during migratory stopovers

  • F. Lynn Carpenter
  • Mark A. Hixon
  • Robert W. Russell
  • David C. Paton
  • Ethan J. Temeles
Article

Summary

Three age-sex classes of rufous hummingbirds (Selasphorus rufus) overlap temporally and defend feeding territories during migratory stopovers in the Sierra Nevada of California. We demonstrate that these classes differ in their ability to secure and maintain high-quality feeding territories for refueling, and that these differences result in differences in resource use. Data on acquisition of territories, territory characteristics, and responses of territory owners to intruders suggest that several mechanisms are involved in determining dominance, involving sex- and age-related differences in wing disc loading, coloration, and experience. We discuss the implications of these results for understanding intraspecific variation in migration strategies.

Key words

Intraspecific dominance Territoriality Migration Stopovers Hummingbirds 

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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • F. Lynn Carpenter
    • 1
  • Mark A. Hixon
    • 2
  • Robert W. Russell
    • 1
  • David C. Paton
    • 3
  • Ethan J. Temeles
    • 4
  1. 1.Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineUSA
  2. 2.Department of ZoologyOregon State UniversityCorvallisUSA
  3. 3.Department of ZoologyUniversity of AdelaideAdelaideAustralia
  4. 4.National Zoological ParkSmithsonian InstitutionWashingtonUSA

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