national invasive species information center -- the gateway to invasive species information; covering federal, state, local and international sources.

United States federal agency that manages national wildlife refuges, protects endangered species, manages migratory birds, restores nationally significant fisheries, and enforces federal wildlife laws.

Essays, photos, and discussion about prairie ecology, restoration, and management

Uniting all Americans to ensure wildlife thrive in a rapidly changing world, the National Wildlife Federation builds upon our nation's conservation heritage for present and future generations.

The Nature Conservancy is tackling the root causes of some of the toughest problems facing people and nature today, replicating good ideas to save many places and improve people’s lives.

With more than 160,000 members and supporters, Mass Audubon protects over 41,000 acres of land throughout Massachusetts, saving birds and other wildlife, and making nature accessible to all. We welcome you to explore a nearby sanctuary, find inspiration, and get involved.

The Nature Conservancy of Canada (NCC) is Canada's leading national land conservation organization. Since 1962, NCC and our partners have helped to conserve 15 million hectares of ecologically significant land nationwide.