Bachelor of Arts, Carleton College, 1940; graduate study, U. Miami, 1940-1941; graduate study, University of Minnesota, 1941.
Free lance writer, Minneapolis, 1941;
editor publications, Minnesota Department Conservation, 1942-1947;
Minnesota representative to, National Audubon Society, 1947-1949;
director pub relations, editor Audubon magazine, National Audubon Society, 1949-1956;
vice president, National Audubon Society, 1955-1956;
director Mountain Lake Sanctuary and Singing Tower, American Foundation, 1956-1980;
director environmental concerns, American Foundation, 1980-1982;
fellow, American Foundation, 1982-1983;
syndicated nature-conservation newspaper columnist, 4 papers, since 1985. Audubon tour lecturer, 1958-1963. Interviewer naturalists Wildlife Unlimited, television station WOR-television, New York City, 1951-1952.
Member Minnesota Bird Commission, 1951-1954. Trustee emeritus Florida Nature Conservancy. Trustee Florida Conservation Foundation.
Vice president, trustee Conservation 70's. Member Governor Florida Natural Resources Committee, State Parks Advisory Council, 1971-1979.
Board directors Defenders Wildlife. Member Wilson Ornithological Society, Wilderness Society, Greenpeace, Native Plant Society, Florida Audubon Society (president, Award of Merit 1964, Cruickshank Conservation award 1993), Hawk Mountain Sanctuary Association (board sponsors), Nature Conservancy (lifetime Conservation award, 2006, Sierra Club, Friends of Earth, Green Horizon Land Trust (board directors 1999-2007), Pi Delta Epsilon.
Married Helen Curtis, February 25, 1943. Children: Kenneth D., Sally, Steven C., Mary.