Plate 111 of the Birds of America by John James Audubon, depicting the pileated woodpecker. Adults are 40 to 49 cm (16 to 19 in) long, span 66 to 75 cm (26 to 30 in) across the wings and weigh 250 to 400 g (8.8 to 14.1 oz), with an average weight of 300 g (11 oz).
How Wolves Help. Wolves play a very important role in the ecosystems in which they live. Since 1995, when wolves were reintroduced to the American West, research has shown that in many places they have helped revitalize and restore ecosystems. They improve habitat and increase populations of countless species from birds of prey to pronghorn, and even trout.
Wolves as hunters. Wolves kill and eat other animals for food. Depending on where they live, wolves live mainly on the meat from such animals as deer, moose, elk or bison. They also eat beavers,rabbits and even mice. They do not eat humans. Wolves are not a threat to humans! (There is no documented account of a healthy wolf ever attacking a human.)