Audubon Society of Portland: Detailed birding information, conservation news, classes, nature viewing sites, and newsletter.
GoBiodiesel Cooperative: A biodiesel cooperative educating and offering biodiesel fuel. FAQs, how to get involved, educational resources, and diesel vehicles for sale.
Hoyt Arboretum: Non-profit greenspace located two miles from downtown Portland. Features nature-focused instruction, a plant collection and volunteer information.
Johnson Creek Watershed Council: Information on projects, events, resources and issues facing the Johnson Creek Watershed. Includes volunteer opportunities, calendar of events, and links to partners and other watershed organizations.
Macaw Landing Foundation: Dedicated to the preservation of macaws through research, public education, and ecotourism. Features newsletter, macaws on the endangered species list and field projects.
Oregon Sierra Club: Public interest organization promoting conservation of the natural environment in Oregon through legislative, administrative, legal, and electoral activities.
Oregon Trout: An organization whose mission is to protect and restore native wild fish and the ecosystems that sustain them.
Portland, OR, Endangered Species Act Program: Endangered Species Act Program, Portland, Oregon; steelhead and Chinook recovery efforts; Columbia, Willamette, Bull Run rivers.
Sustainable Ecosystems Institute: A scientific resource for individuals, organizations, and governments seeking solutions to natural resource issues.
Volunteers in the Gorge: Organization with park information including events, habitat, conservation efforts, and photo gallery.
World Forestry Center: Working to educate people about the world's forests and their relationship to all life. Information about their educational exhibits and programs, international programs, and research activities.
Zenger Farm: Created to educate youth and adults about environmental stewardship, sustainable urban agriculture, and green business development. History of the farm, information on their programs, volunteer opportunities, and articles.