Documents filed under Impact on Birds
...some wind power facilities, such as the Altamont Pass Wind Resource Area (APWRA) in eastern Alameda and Contra Costa Counties, California, are causing severe environmental impacts to raptor populations due to bird kills from collisions with turbines and electrocution on power lines.
Wind turbines in the Altamont Pass Wind Resource Area (APWRA) provide on average 1.1 billion kilowatt-hours (kWh) of emissions-free electricity annually, enough to power almost 200,000 average households per annum, but these turbines also kill birds that are legally protected, and have been doing so for decades. This five-year research effort focused on better understanding the causes of bird mortality at the world's largest wind farm. Researchers studied 2,548 wind turbines and combined their data with results from 1,526 wind turbines they had studied previously. They sought to: (1) quantify bird use, including characterizing and quantifying perching and flying behaviors of individual birds around wind turbines; (2) evaluate flight behaviors and the environmental and topographic conditions associated with them; (3) identify possible relationships between bird mortality and bird behaviors, wind tower design and operations, landscape attributes, and prey availability; and (4) develop predictive, empirical models that identify turbine or environmental conditions that are associated with high vulnerability. Researchers concluded that bird fatalities at the APWRA result from various attributes of wind turbine configuration and placement, and that species-specific behavior plays a large role in how each contributory factor affects mortality. The report details numerous specific observations. Researchers identified and evaluated possible measures to mitigate bird mortality in the APWRA. They offer recommendations to discontinue or modify some current management actions, to implement new ones immediately, and to experiment with others. Data presented in the report support these recommendations. The results suggest that repowering with carefully placed, modern wind turbines mounted on taller towers may be the preferable means to substantially reduce bird mortality.
William R. Evans, a renowned ornithologist with expertise in nocturnal bird migration, provides a comprehensive critique of the Avian Risk Assessment for the Chautauqua Wind plant (NY). As part of this critique, Evans addresses the deficiencies in the Erickson, et al. bird mortality studies widely quoted by the wind industry.
We are writing to request that the General Accounting Office undertake a study on the interim guidance issued by the U.S. Fish and Wildlife Service concerning the development of wind turbine facilities ......
Center for Biological Diversity's demand for a jury trial, as plaintiff, vs. FPL Energy et al with respect to bird kills in Altamont Pass in Alameda and Contra Costa Counties in California.
My name is John L. or Jack Kaspar. I am an ornithologist by training and professor emeritus at the University of Wisconsin-Oshkosh.
Unlike in the west, the vast majority of birds likely to be killed at wind turbines in the east are neotropical migrants - which pass through our region mostly at night. Many of these species are already under severe pressure due to loss and fragmentation of breeding and wintering habitat.
This graphic shows the relationship between the height of turbines and the collision threat to nocturnal migrants at the Chautauqua Wind Farm, NY, in the Fall of 2003. A companion graphic included in the NWW photo gallery depicts this threat to noctural migrants in the Spring of 2003.
New Jersey Audubon Society (NJAS) and its 20,000 members generally support environmentally-responsible renewable energy sources, such as wind power, photovoltaic cells, geothermal and hydro-fuel cells. Because traditional energy sources contribute to global climate change, habitat change and degradation, smog pollution, mercury contamination in our waterways, and radioactive waste, NJAS recognizes the importance of developing emission-free sources of energy. However, we are concerned about the potential impacts of these developing technologies on wildlife, and natural habitats.
The attached pdf file contains a letter written by Steve Anschutz, Nebraska Field Supervisor of the USF&WS, to Rockford Plettner, Environmental Specialist Water/Natural Resources of Nebraska Public Power District (NPPD). The letter responds to a NPPD request for input regarding the possible construction of a wind farm south of Ainsworth, Brown County, Nebraska. The letter's comments are provided as technical assistance and predevelopment consultation....
This graphic shows the relationship between the height of turbines and the collision threat to nocturnal migrants at the Chautauqua Wind Farm, NY, in the Spring of 2003. A companion graphic included in the NWW photo gallery depicts this threat to noctural migrants in the Fall of 2003.
This Action Statement has been prepared under section 19 of the Flora and Fauna Guarantee Act 1988 under delegation from Chtoe Munro, Secretary, Department of Natural Resources and Environment, June 2001