DCHP-1 Online
partridge hawk 
1 the gyrfalcon, Falco rusticolus.
- 1772 Speckled partridge hawk, at Hudson's Bay. The name is derived from its feeding on the birds of the grouse tribe, commonly called partridges, at Hudson's Bay.
- 1882 The last named is known as the partridge or winter hawk. . . .
- 1956 Gyrfalcon [is also called] partridge hawk ("Labr.," Hudson Bay). . . .
2 the goshawk, Accipiter gentilis.
- 1959 Goshawk [is known as] partridge hawk (As a predator on the ruffed grouse and allies. Nfld., "Labr.", Sask.); speckled partridge hawk ("Hudson Bay," Forster, 1772). . . .
- 1772 Speckled partridge hawk, at Hudson's Bay. The name is derived from its feeding on the birds of the grouse tribe, commonly called partridges, at Hudson's Bay.