This time of year many bird species migrate from northern regions to the south as winter approaches. If you are working outside, you probably see the V’s of geese flying south, but many other bird species also migrate. Birds take advantage of weather patterns to move south, and often ride the winds blowing out of the north to help them fly south more quickly than they can on their own. If you are interested in reading more about this, check out this post at Earth Gauge with some resources on birds and weather here.