Piper, W. H.   1990.   Site tenacity and dominance in wintering white-throated sparrows Zonotrichia albicollis (Passeriformes: Emberizidae).   Ethology 85:   114-122.


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.

[ENTIRE ARTICLE (.pdf file)]