The famous Peterson Field Guides help you identify birds, animals, plants, and other natural things using key field marks. When Peterson died in 1996, tributes focused on the three ways that his Field Guide had led a large segment of American society into the green movement of the century's last decades. David Clapp, a director of sanctuaries for the Massachusetts Audubon Society, suggested, "Those field guides opened a door and, culturally, all of America has walked through it. By becoming aware of birds, we essentially opened up all of our environmental thinking." Clapp was referring to an awareness that there were more types of birds than just crows, robins, and little brown ones. The guide encouraged a closer look by rewarding it. Hence the Peterson Natural Fields were mainly the guides to the birds. For more natural guides please do visit us at NatureieldGuides.com.