Greater Snow Geese winter along the Atlantic coast in the NE US, then most of the population stages in upstate New York (especially around Montezuma National Wildlife Refuge, not too far from where we found this bird). After that the population stages along the St. Lawrence River, mostly in Quebec. Greater Snow Geese breed in the high Arctic. Particularly in recent years, they have moved west, reaching into easternmost ONtario, mostly still east of Cornwall.
I am in that area of Ontario for the weekend, and had a look around (didn't get east enough to be in prime spring Snow Goose territory). There are as usual thousands of Canada Geese (I had about 12,000 today), but I was only able to find 2 Snow Geese at the Long Sault Parkway (here's my eBird checklist):
|2 first basic blue phase Snow Geese|