Predator & Prey Olympics:  The Grouse and the Goshawk

Most predators and prey have evolved in unison.
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They are so closely matched that every day is an “Animal Olympics.” Intimately linked together are two birds — the speedy Goshawk and the alert Ruffed Grouse. Many predators pursue the Grouse, but none is so well-adapted to catch it as the Goshawk. This is the story of an unerringly precise natural balance.