On behalf of Audubon New York, MNLA created a landscape master plan for the Theodore Roosevelt Sanctuary in Oyster Bay Cove, the first Audubon Songbird Sanctuary in the nation. The goals of the master plan are to clarify circulation routes, re-envision existing structures, establish native plant demonstration gardens, and create a welcoming entry to the site. The plan also provides strategies for improving bird habitat, controlling invasive species, and managing stormwater with green infrastructure. The central gathering area will feature a restored bronze fountain by the American artist Bessie Potter Vonnoh (cast in 1925).
Twelve acres of the sanctuary were donated by W. Emlen and Christine Roosevelt in memory of their cousin, the late Theodore Roosevelt, 26th president of the United States.