In fact, many Canadian geese gave up migrating
numerous goose generations ago. When I was a kid in the
60s we didn’t see them. I thought I heard that they
were all but extinct. With the proliferation of people and
ponds in the 70s and 80s, I see Canadian geese all over
California and other places all year long.
It’s the same up here. They don’t migrate south anymore. There is enough food at least in Toronto that they brave the winter here for the smorgasbord. That said they are incredible poop machines.