New York. Auk 18:488-496. Fisher, Albert K. 1893. The hawks and owls of the United States and their relations to agriculture. Bull. 3. 210 p. U.S. Govt. Print. Off., Wash., D.C. Forbush, Edward Howe, and John Bichard May. 1939. A natural history of American birds of eastern and central North America. Bramhall House, New York. 552 p. Foreman, Larry D. 1976. Nest site and activity of an incubating common merganser in northwestern California. Calif. Fish and Game 62(1):87-88. Forsman, Eric. 1976. The spotted owl in Oregon. M.S. Thesis. Oregon State Univ. 131 p. Fyfe, Richard. 1969. The peregrine falcon in the Canadian arctic and eastern North America. _In_ J. J. Hickey, ed. Peregrine Falcon Populations. Univ. of Wisconsin Press. Milwaukee. Ganier, A. F. 1932. Duck Hawk at Reelfoot Herony. Migrant 3(2):28-32. Gibbs, Richard M. 1961. Breeding ecology of the common goldeneye, _Bucephala clangula americana_, in Maine. M.S. Thesis. Univ. Maine, Orono. 113 p. Gibo, D. L., R. Stephens, A. Culpeper, and H. Dew. 1976. Nest site preferences and nesting success of the starling, _Sturnus vulgaris_ L., in marginal and favorable habitats in Mississauga, Ontario, Canada. Am. Midl. Nat. 95(2):493-499. Gillespie, Mabel. 1930. Behavior and local distribution of tufted titmice in winter and spring. Bird-Banding 1(3):113-127. Gingrich, William F. 1914. Young turkey vultures. Bird Lore 16(4):281. Givens, Lawrence S. 1971. Introduction to the symposium on the ecology and management of the red-cockaded woodpecker. P. 1-3. _In_ The ecology and management of the red-cockaded woodpecker: Symposium Proceedings, Okefenokee Natl. Wildl. Refuge, Folkston, Georgia, May 26-27, 1971. U.S. Dept. Int., Bur. Sport Fish. Wildl. [Published in cooperation with Tall Timbers Res. Stn., Tallahassee, Florida.] Godfrey, W. Earl. 1966. The birds of Canada. Natl. Mus. Can. Bull. 203. Ottawa, Ontario. 428 p. Goss, Nathaniel S. 1878. Breeding of the duck hawk in trees. Nutt. Ornithol. Club Bull. 3:32-34. Greenway, James C., Jr. 1958. Extinct and vanishing birds of the world. Am. Comm, for Int. Wildl. Protection Spec. Publ. No. 13. p. 357-362. Grenquist, P. 1965. Changes in abundance of some duck and seabird populations of the coast of Finland 1949-1963. Finn. Game Res. 27:1-114. Grice, David, and John P. Rogers. 1965. The wood duck in Massachusetts. Final rep. Fed. Aid in Wildl. Restor. Proj. W-19-R. 96 p. Grinnell, Joseph, and Tracy Storer. 1924. Animal life in the Yosemite. Univ. of Calif. Press, Berkeley, 752 p. Grinnell, Joseph, and Alden H. Miller. 1944. The distribution of the birds of California. Cooper Ornithol. Club. 27. 608 p.