a chubby, partridge-like fowl, Lagopus rupestris, of the Barren Grounds.
See also: rock ptarmigan
- 1743  (1949)  Rock partridges is the smallest, and black from the Eye to the bill and white all over else in the winter, Excep't the tail, having 14 black feathers with a Litle white at the End and the Rest which is 14 more all White.
- 1795  (1911)  Rock Partridges . . . like the Willow Partridge, change their plumage in summer to a beautiful speckled brown; and at that season are so hardy, that, unless shot in the head or vitals, they will fly away with the greatest quantity of shot of any bird I know.