Bowdoin NWR was previously managed as part of irrigation efforts by the
U.S. Bureau of Reclamation to conserve water that would flow into
Lake Bowdoin. The seasonal floods from spring snow melt created excellent habitat for migratory and nesting waterfowl as well as raptors such as the
bald eagle and
peregrine falcon. Lake Bowdoin is on both the
Central and
Pacific Flyways used by migratory birds and was well known by locals and naturalists as having the largest numbers of migratory birds in Montana. In an effort to better protect the habitat, Lake Bowdoin and the surrounding region were set aside as a refuge in 1936 and administration passed to the U.S. Fish and Wildlife Service. ==Fauna==