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Africa's Great Migration of Wildebeest Shows "Swarm Intelligence"

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wildebeest deep water photo

"Eventually," they add, "it takes one brave individual to venture into the water and then all the other animals rush to follow. We often spent many frustrating hours waiting for a dithering herd to start crossing!"

SLIDESHOW: 10 Swarms to Make You Squirm

Photo credit: Burrard-Lucas

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