Cackling Goose Overview, All About Birds, Cornell Lab of Ornithology
I Love Wildlife - Aleutian Canada Goose - They say these are one of the smallest subspecies of Canada goose. Adults are slightly larger than a mallard, weighing 4 to 6 pounds.
Canada goose and Cackling goose/ Canadese gans
Cackling Goose - eBird
Hunt California Aleutian Geese 2 Ways - Game & Fish