Yesterday we were out near the airport. We head a loud report (one of YVR's bird-scaring noisemakers), followed by the stirring cacophony of thousands of Lesser Snow Geese taking wing. They are already back in large numbers, with more arriving daily. It seems they only just left for Siberia.
Check the west dike of Richmond, or visit the Reifel Migratory Bird Sanctuary on Westham Island to see them. For more info on Pacific Northwest Lesser Snow Goose population sizes, etc., see this source.