Ok so maybe resurrecting the embattled American Chestnut isn't your thing. Here's another way you can become involved with nature through your own backyard. The Ornithology Lab at Cornell University sponsors a backyard bird monitoring program designed to track migratory numbers of bird species across North America. Anyone can participate and contribute data to their records. Click on the link below to read more.
Project Feeder Watch
Cornell also has an amazingly detailed online bird ID website as well.
All About Birds