I watched from my front yard earlier this week as flocks of Canada geese flew by in their neat v-formations just before sunset. I continued to watch as each passing flock lowered and then disappeared just below the tree line once they reached a nearby lake. I suspect that these were flocks making their way back north.
An interesting fact I read from Cornell was that many migratory populations of Canada geese are not going as far south in winter as they once did. This shift has been attributed to changes in farm practices that makes waste grain more available in fall and winter, as well as changes in hunting pressure and changes in weather. Happy skywatching!