These Geese Are Giving Me Goose Bumps

Things doesn't really get cranking until about 0:15 into this clip (which was pointed out to me by Laughing Squid), but once they get going, it's pretty astonishing to watch. (Bonus hilarity at about the 0:29 mark, as well.)

Snow Geese on Lake Massawippi in Ayer's Cliff, Quebec, Canada on November 30, 2015
Attribution(s): Video and stills are the property of a YouTube account known as "LazyriverGoldens;" "Wall-to-Wall Geese" provided by Unsplash's Ray Hennessy, whose work is made available via a Creative Commons CC0 1.0 Universal (CC0 1.0) license