If you follow the plot of the movie, you would understand that Brian Keith's character was raised by Mi'kmaq indians. It was explained in the opening that part of the Mi'kmaq totem was the wild goose (not factual, but none the less) which makes Cam's reluctance to kill wild geese understandable. Of course, the Mi'kmaq would have been hunters and trappers so killing wild animals for their fur would also be understandable.
Review of Those Calloways
