Earthworm collecting seeds

This is a timelapse video of the common nightcrawler earthworm (Lumbricus terrestris) gathering seeds of giant ragweed (Ambrosia trifida). For more info., see "Impact of an exotic earthworm on seed dispersal of an indigenous U.S. weed," 2008. Journal of Applied Ecology 45:1621-1629. The soundtrack is Chopin's Mazurka Opus 7, No. 4 in A-flat.