Add Yahoo as a preferred source to see more of our stories on Google. A shape-shifting flock of thousands of starlings, called a murmuration, is amazing to see. As many as 750,000 birds join together ...

Over 10 years ago while on a woodland hike with a friend in northwestern Pennsylvania, an intense low pitched pitter-patter sound from overhead startled us. Was it a sudden downpour on a sunny day?

Like the collective motions of bird flocks, the patterns result from the concerted interactions of many individual particles without a central coordinator. Credit: Wikipedia. Like the collective ...

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