Dusky Canada geese are dark breasted big geese, right?
Yes, a typical dusky Canada goose is a larger bird with a dark breast. However, as in any wildlife species or subspecies, there is variation. Interbreeding with other subspecies does not necessarily bring about this variation, but rather it is natural. The “type specimen” (the one used to describe the group) usually represents the middle of the range, and in the case of color, there are both darker and lighter birds. Some of the lightest birds have color that overlaps with another subspecies, the lesser Canada goose. It is not possible that a distinct separation between these two subspecies can be made based on color alone.
