Heath Hen, an extinct grouse. It was a subspecies of the greater prairie chicken. Heath hens were numerous in New England during colonial times. They were reduced in number by hunting, destruction of their habitat, and natural enemies. By 1920, only a few remained on Martha's Vineyard off the Massachusetts coast. The subspecies had disappeared by 1932.
The heath hen was Tympanuchus cupido cupido of the family Tetraonidae.