While crossing the Snake River bridge after a photo shoot. I happened to notice off to the left what I thought to be snow geese. Thought it was odd for there to only be four of them. Upon looking closer I realized that they weren't snow geese, they were swans. Now that was even stranger as I have never seen them in this area of the river before. I quickly did a U-turn, parked and tried my best to sneak up to get a better vantage point. Boy these are some cagey birds. I had to settle for four birds in flight.