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	Podcast:		Local Features by WXPR
	Episode:		How Wildlife Deals with a Northwoods Winter Pt. 2
	Category:		Government & Organizations
	Duration:
	Publish Date:		2018-02-23 07:46:31
	Description:		Wildlife needs to adapt to its place on the globe to survive, not to mention thrive. In this installment of Wildlife Matters , the Masked Biologist takes a look at another generally accepted principle of adaptation to life in the north: Allen’s Rule. Earlier this winter, actually last December, I wrote about Bergmann’s rule, a generally accepted principle that relates to wildlife adaptation and survival in northern climates in winter as compared to southern climates in summer. In it’s simplest form, Bergmann’s rule states that body size is larger at northern latitudes than in the same species or closely related species at southern latitudes. The principle relates specifically to body heat regulation; larger animals have more mass, and are able to keep body heat in. The tradeoff then is that in the summer, these animals have a harder time shedding heat. My example was the wolf; the Mexican gray wolf is considered the smallest of the five subspecies of gray wolf in North America, and the
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