Here are some links that we think you will find interest in:

National Audubon Society:
Audubon Pennsylvania:
Audubon at Home:
2nd PA Breeding Bird Atlas:
Hog Island Maine Audubon Camp:
Central Pennsylvania Conservancy:
The Manada Conservancy:
The Nature Conservancy:
NJ Audubon World Series of Birding:
Operation Migration:
Together Green:
Meadowood Native Plant Nursery:
Scott Weidensaul - Interview on "Bird Banding":