. The Canadian field-naturalist. 1987 Notes 589 istics in Ohio. Journal of Wildlife Management 43: 324- 333. Vahle, J. R., and D. R. Patton. 1983. Red Squirrel cover requirements in Arizona mixed conifer forests. Journal of Forestry 81: 14-15,22. Weigl, P. D., and E. V. Hanson. 1980. Observational learning and the feeding behavior of the Red Squirrel Tamiasciurus hudsonicus: the ontogeny of optimization. Ecology 61: 213-218. Yahner, R. H. 1980. Burrow system use by Red Squirrels. American Midland Naturalist 103: 409-411. Yahner, R. H. 1984. Winter (1983) birds of the Barrens Grouse Management
. The Canadian field-naturalist. 1987 Notes 589 istics in Ohio. Journal of Wildlife Management 43: 324- 333. Vahle, J. R., and D. R. Patton. 1983. Red Squirrel cover requirements in Arizona mixed conifer forests. Journal of Forestry 81: 14-15,22. Weigl, P. D., and E. V. Hanson. 1980. Observational learning and the feeding behavior of the Red Squirrel Tamiasciurus hudsonicus: the ontogeny of optimization. Ecology 61: 213-218. Yahner, R. H. 1980. Burrow system use by Red Squirrels. American Midland Naturalist 103: 409-411. Yahner, R. H. 1984. Winter (1983) birds of the Barrens Grouse Management Area. American Birds 38: 39. Yahner, R. H., and J. W. Grimm. 1984. Effects of edge, age, and cover type on wildlife microhabitats in even-aged forest stands in central Pennsylvania. Proceedings of the Pennsylvania Academy of Science 58: 60-66. Received 3 February 1986 Accepted 11 March 1987 Aleutian Tern, Sterna aleutica, A New Bird for Canada Margo E. Hearne' and John M. Cooper2 Box 505, Masset, British Columbia VOT IMO ^British Columbia Provincial Museum, 675 Belleville Street, Victoria, British Columbia V8V 1X4 Hearne, Margo E., and John M. Cooper. 1987. Aleutian Tern, Sterna aleutica, a new bird for Canada. Canadian Field- Naturalist 101 (4): 589-590. The first Canadian specimen record of the Aleutian Tern {Sterna aleutica) was obtained at Masset, British Columbia, on 10 May 1985. Key Words: Aleutian Tern, Sterna aleutica, first Canadian record. The Aleutian Tern, Sterna aleutica, is a rare and poorly known species that inhabits the northwest Pacific, Bering Sea, and Gulf of Alaska. Historical and current breeding colonies have been documented in Alaska at Norton Sound, Goodnews Bay, Kodiak Island, and near Yakutat and in the USSR on Sakhalin Island and the Kamchatka Peninsula (Gabrielson and Lincoln 1959; Flint et al. 1984). In recent years several active breeding colonies have been documented in the Gulf of Alaska near Cordova and as far south as Yakutat (approximat
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