Every September the geese flock together to get ready for the long migration south . Observations and records maintained by the Hudson's Bay Company at York Factory and Churchill Factory on The Hudson Bay between 1714 and 1825, serve as the source of information for a study of changes in the date of arrival of geese as a phonological indicator of climatic change. Changes in the migration pattern of geese are reflected in the changing date of arrival at the same location over a long period of time. Variations in this date are determined to be a function of southerly or tailwinds in the northward spring migration.

Churchill has millions of snow and Canada geese migrating every year

come and experience the migration.