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Their mission is to work with others to conserve, protect and enhance fish, wildlife and plants and their habitats for the continuing benefit of the American people. They run a 150 million-acre National Wildlife Refuge System of more than 551 National Wildlife Refuges and thousands of small wetlands and other special management areas. Under the Fisheries program they also operate 70 National Fish Hatcheries, 65 fishery resource offices and 86 ecological services field stations. The vast majority of fish and wildlife habitat is on non-Federal lands.
Functions of the FWS
IUCN Red List of Threatened and Endangered Species 
The IUCN Species Programme working with the IUCN Species Survival Commission (SSC) has for more than four decades been assessing the conservation status of species, subspecies, varieties, and even selected subpopulations on a global scale in order to highlight taxa threatened with extinction, and therefore promote their conservation.
U.S.D.A Natural Resource Conservation Service
Originally established by Congress in 1935 as the Soil Conservation Service (SCS), NRCS has expanded to become a conservation leader for all natural resources, ensuring private lands are conserved, restored, and more resilient to environmental challenges, like climate change. It is one of the major branches of the U.S. Department of Agriculture.
Seventy percent of the land in the United States is privately owned, making stewardship by private landowners absolutely critical to the health of our Nation’s environment.
NRCS works with landowners through conservation planning and assistance designed to benefit the soil, water, air, plants, and animals that result in productive lands and healthy ecosystems.
Functions and Resources of the NRCS:
