Wind energy is able to generate electricity without many of the environmental impacts (conventional and toxic air pollution and greenhouse gases, water use and pollution, and habitat destruction) associated with other energy sources. This can significantly benefit birds, bats, and many other plant and animal species. However, the direct and indirect local impacts of wind plants on birds and bats continue to be an issue. The populations of many bird and bat species are experiencing long-term declines, due to the effects of a wide range of human activities, including energy production and consumption. These proceedings document current research pertaining to wildlife fatalities; habitat and behavioral impacts; cumulative and landscape-scale impacts to species; mitigation techniques and technologies; and offshore considerations.