The Dusky Canada Goose (Branta canadensis occidentalis) once wintered regularly by the hundreds on the north coast of California, yet this fact has now vanished from much of the literature on the Canada Goose. In the 1930s James Moffitt found the subspecies was regular at two sites in Del Norte and Humboldt counties, but by the mid-1980s its numbers were much reduced and only occasional individuals were found thereafter. The retraction of the Dusky Canada Goose from the southern limit of its winter range parallels a rangewide population decline as well as surges in numbers of the recovering Aleutian Cackling Goose (B. hutchinsii leucopareia) and the proliferating Western Canada Goose (B. c. moffitti), possibly competitors.