During 1994-1995, we saw 70 species of birds on the Buffalo Ridge Wind Resource Area. In both years bird abundance peaked in spring. Red-winged blackbirds (Agelaius phoeniceus), mallards (Anas platyrhynchos), common grackles (Quiscalus quiscula), and barn swallows (Hirundo rustica) were the species most commonly seen. Most birds (82-84%) flew above or below the height range of wind turbine blades (22-55m). The Buffalo Ridge Wind Resource Area poses little threat to resident or migrating birds at its current operating level.
Bird Flight Characteristics Near Wind Turbines in Minnesota
Title: Bird Flight Characteristics Near Wind Turbines in Minnesota
January 01, 1998
Journal: American Midland Naturalist
Osborn, R.; Dieter, C.; Higgins, K.; Usgaard, R. (1998). Bird Flight Characteristics Near Wind Turbines in Minnesota. American Midland Naturalist, 139(1), 29-38.