Latitudinal trends in body size among over-wintering leaf warblers (genus Phylloscopus)

  title={Latitudinal trends in body size among over-wintering leaf warblers (genus Phylloscopus)},
  author={Madhusudan Katti and Trevor D. Price},
Geographical trends in body size are commonly interpreted in the framework of Bergmann's rule, which states that larger body sizes are found at higher latitudes. Here we demonstrate a negative association of body size with latitude among over-wintering warblers of the genus Phylloscopus as well as within a single species (Phylloscopus trochiloides) we were able to study in depth. We examine the role of resources in determining body size distributions. In mid-winter in India there are more large… 

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