American Bird Conservancy
http://www.abcbirds.org

American Birding Association
http://www.americanbirding.org

Audubon Society of Portland
http://www.audubonportland.org

Crane Meadows Nature Center
http://www.cranemeadows.org

Jackson Bottom Wetlands
http://www.jacksonbottom.org

Last Chance Forever, The Bird of Prey Conservancy
http://www.lastchanceforever.org

Oregon Cascades Birding Trail
http://www.oregonbirdingtrails.org

Additionally, the Leupold Foundation sponsors the following organizations:

Nature Conservancy
http://www.nature.org

Natural Resources Defense Council
http://www.nrdc.org