Canada geese are commonplace throughout Montana--especially during fall migration when the geese gather in huge flocks on lakes and ponds. They are frequent visitors to grain fields and eat anything left after the harvest. During migration, they fly in a "V" formation and honk as a form of communication throughout the trip. In fact, a herd of gees overhead is likely to produce more honking than a New York City traffic jam. Canada geese mate for life and share the parenting responsibilities of the goslings, who can swim just a few days after birth. These adaptive birds have become so accustomed to people that they have been known to take up residency at golf courses and city parks throughout Montana.