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.
1 Wolves are not killed because they are gray, but because they eat sheep. 2  As quoted in Will Graves, Wolves in Russia: Anxiety throughout the Ages, (2007). 3  An old dog never tried to make friends with a wolf. 4  As quoted in Will Graves, Wolves in Russia: Anxiety throughout the Ages, (2007). It is better to be torn to pieces than to become a wolf's prey. 2  As quoted in Will Graves, Wolves in Russia: Anxiety throughout the Ages, (2007). 3  A peasant may have modest clothes but a sharp mind. 4  He still has his brain safe from wolves.