The mission of Amigos de la Sevilleta is to support the primary purposes for which the Sevilleta National Wildlife Refuge was established to conserve wildlife and habitat using sound research and management.

Amigos de la Sevilleta National Wildlife Refuge, Inc., is an independent, non-profit corporation dedicated to supporting the Sevilleta National Wildlife Refuge in the conservation of wildlife and habitats through environmental education and research. The corporation shall promote the preservation of the natural and historical resources of the Refuge, foster its use and enjoyment by the public consistent with the protection and preservation of its environment and wildlife, and engage in such educational, scientific and civic activities as will assist the management of the Refuge in carrying out its mandates.

Amigos de la Sevilleta was founded on November 15, 2006, following several months of meetings, during which organizing committee members met with refuge management to define areas in which a citizen support group could assist the refuge. By-laws were approved in December, 2006. Los Amigos is governed by a Board of Directors, consisting of president, vice president, treasurer, secretary, and three directors-at-large, together with non-voting liason members appointed by the refuge management and the University of New Mexico. Officers and directors are to be elected to two year terms at an annual meeting of members.