Nice shot Christina. I have already seen/heard snow geese here in Oregon while out duck hunting this year, which seems a bit early. I'm sure while you were out shooting this scene, you were probably overwhelmed at how noisy these birds are. Listening to a big flock of these birds has the same effect on my ears as fingernails on a chalkboard. Very high pitched squealing sound. I'm sure the farmers there are dreading seeing that many geese. They can, and are, very destructive to grain fields and can clean out a field in a day or two. If you are interested in waterfowl migrations and when the best times are to go look for them, try this site:
http://www.ducks.org/hunting/waterfo...ose#ad-image-0 It give you a lot of info on almost every species of waterfowl in N. America. BTW, these gees nest/breed in the very northern part of Canada, not Russia. So, what you are seeing is just the start of their long migration to a warmer climate. Next time, see if you can get closer and fill the entire frame with the chaos. It makes for some interesting views to try to pick out details in an individual goose or duck.