Heath hen is a now-extinct bird species that once thrived in the eastern United States. The bird was also called the eastern heath hen or eastern prairie chicken. There are many regional synonyms for the heath hen including the New England heath hen, the pinnated grouse, and the Massachusetts grouse. These synonyms give a sense of the bird's original habitat and range. Heath hens were known for their loud mating calls and their ability to blend in with their surroundings, making them difficult to spot. Unfortunately, due to habitat destruction and hunting, the last heath hen died in 1932, marking the end of an iconic American bird.