Geographic Size Variation in Birds and Its Relationship to Climate 1

@inproceedings{James2008GeographicSV,
  title={Geographic Size Variation in Birds and Its Relationship to Climate 1},
  author={Frances C. James},
  year={2008}
}
There is a high degree of concordance among the patterns of geographic size variation in birds in the eastern and central United States. This is demonstrated for 12 species by assuming that wing length measurements are an indicator of body size on the intraspecific level, and by arranging the data in the form of a grid of means of wing lengths for sample areas. Maps giving isophenetic lines for wing length indicate gradually increasing size dines northward and westward from Florida in the Hairy… CONTINUE READING
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