BasicsBergmann's Rule

Bergmann’s Rule

References and More Information:

  • Ritchison, Gary, Downy Woodpecker, Wild Bird Guide, 1999
  • Meiri S. and Dayan T. 2003. On the validity of Bergmann’s rule. Journal of Biogeography 30:331–351

As the pressure of population increasingly regiments us and crowds us closer together, an association with the wild, winged freedom of the birds will fill an ever growing need in our lives.
– Edwin Way Teale, introduction to Songbirds in Your Garden, 1953


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