Webum > Society > Issues > Environment > Organizations > National Audubon Society > Regional > United States > Montana Bitterroot Audubon Based in Hamilton. Five Valleys Audubon Society Based in Missoula. Montana Audubon Represents all the state chapters. Activism, apparel, birds and birding, issues and projects, and newsletter excerpts. Help build the biggest human edited directory on the internet Add your website - Open Directory Project - Become an editor