WOLFBERRY WHOOPING CRANE SANCTUARY, Texas (AP) — Carter Crouch has been fascinated by the whooping crane’s conservation story for as long as he can remember. The white bird, named for its “whooping†call, is one of the rarest in North America and was among the first to be protected by the Endangered Species Act.

It’s a story that began decades ago when they were on the brink of extinction. Today, more than 550 whooping cranes migrate from Canada to Texas in the winter. It's the last self-sustaining wild flock in the world.

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