Cokinos, Christopher (2000): The Heath-hen In: Hope is the Thing with Feathers: A Personal Chronicle of Vanished Birds: 121–196.
Dữ liệu liên quan tới Tympanuchus cupido cupido tại Wikispecies Cokinos, Christopher (2000): The Heath-hen In: Hope is the Thing with Feathers: A Personal Chronicle of Vanished Birds: 121–196.