WOW. I went with a bunch of grad students (we managed to borrow the Ecology Dept van) to a place in Wisconsin with what seemed like tens of thousands of them. Seeing them come in to the lake shore in huge flocks, calling, jostling for position, getting settled only to wheel back into the sky once more... it was one of the most amazing experiences of my life, right up there with driving through misty giant redwoods and hiking around to see a million monarchs draped over the branches, so many of them fluttering through the air that it was impossible to track the flight of a single butterfly.
