"Tens of thousands of birders are now what the [Cornell Lab of Ornithology] calls “biological sensors,” turning their sightings into digital data by reporting where, when and how many of which species they see. [...] sighting of a dozen herons is a tiny bit of information, but such bits, gathered in the millions, provide scientists with a very big picture: perhaps the first crowdsourced, real-time view of bird populations around the world."Check out BirdCast forecasts!
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