I stood on the shoreline, frozen fingers twitching. As light nudged into the sky the honking intensified, becoming ever urgent. Soon wave after wave of Pink-foots were overhead, inky blobs in the burgeoning dawn. Then, from nowhere, waders. Fast, flighty, frenetic. I screamed. A second rush, a third. Twisting, turning, returning all with astonishing synchronicity. They blew me away.