The extinction of heath hens, a subspecies of prairie chickens (in the grouse family), on Martha's Vineyard, Massachusetts, was the result of

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The extinction of heath hens on Martha's Vineyard was the result of depletion by hunting, followed by several environmental disasters such as habitat loss, wildfires, and severe winters. While inbreeding and low reproductive rates may have also played a role, the primary cause of extinction was human hunting and subsequent environmental challenges.

The Extinction of Heath Hens, a Subspecies of Prairie Chickens