Map Post #6

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 This map shows sightings of the migration of high Arctic shorebirds. The sightings occurred in North America during 2006; the video plays the cycle twice. The colors of the squares change from white to red, depending on the number of sightings. Overall, the symbols remind me of confetti, and not so much birds.

Source: http://www.birds.cornell.edu/birdflu/AIscience/maps/