Grand Control of the Year: The Nature Conservancy Hummingbird Membership

The first six paragraphs of the four-page letter inside tell a story directly related to the outer. "It amazes me that a broad-tailed hummingbird can migrate over 2,000 miles … on wings that aren't quite two-and-a-half inches long each," it begins. The facts and figures presented — how many times the bird's heart beats in a minute, how quickly its wings flap — help make the case that preserving the bird's habitat along its long migration path is vital to its very survival.