Sorry, Little Hawk, think again! Your have omitted the likely effects of global warming in your crap burying calculations. The few inroads your Canadian species have made in crap distribution will soon be negated as your geese, moose and beavers begin to move northward as things warm up. In fact, they'll probably all move well north of the Canada/US border and more southernly species will migrate northward to take their places. Don't be surprised if Toronta and vicinity are buried under armadillo and alligator crap within the next fifty years.