 ##  [Bergmann's Rule](/bergmanns-rule) 

  ##  [Bergmann's Rule](https://natural.quantumdictionary.io/bergmanns-rule-0) 

  
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**Natural &amp; Formal Sciences Dictionary**

 
Definition

An ecogeographic pattern stating that within broadly distributed taxonomic clades of endothermic animals, populations or species in colder climates tend to have larger average body sizes than closely related populations or species in warmer climates.