Site Tenacity and Dominance in Wintering White-throated Sparrows Zonotrichia albicollis (Passeriformes: Emberizidae)

Authors

  • Walter H. Piper

    Corresponding author
    1. Department of Biology, University of North Carolina, Chapel Hill
      Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA.
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Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA.

Abstract

Supplemental feeding of a wintering population of 132 white-throated sparrows was suspended in midwinter to determine characteristics associated with the tendency to remain within previously established home ranges after a drop in food levels. Site-faithful birds tended to be dominant, to have high levels of subcutaneous fat and to reside in certain regions of the study area. The high site fidelity of dominant sparrows reaffirms the importance of dominance in structuring populations.

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