Henry Carter Hull

There are nine subspecies of tigers, but three are now extinct. They play a very important role in keeping nature in balance. But, due to expanding human populations, poaching, and more, they're in danger.

Explains how wild turkeys have come back from the brink of extinction.

Describes the habitat, behavior, and endangered status of black rhinos and suggests ways to help save them from extinction.

A condor is an incredible bird. With a wingspan of 10 feet, it seems too large to fly. And yet, winds carry it so efficiently that it may only need to flap once an hour. Sadly, the world came very close to losing the California condor. At one point, only 30 were left. Readers of this book will find out why these birds were so close to extinction and what was done to bring them back. Beautiful photographs show these birds of prey as the majestic animals...

"In 1995, the gray wolf was reintroduced to Yellowstone National Park after a seventy-year absence. All these years later, we can clearly see the cascading effects this has had on the park's ecosystem. This is a spectacular example of a trophic cascade, the term used when an important member of an ecosystem goes missing and many other living things are indirectly affected, causing a chain reaction of events. In the case of the reintroduced wolves...