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Bird Deaths at Wind Farms (Part 5)

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2013 Canadian Bird Mortality Study In 2013, J. Ryan Zimmerling, Andrea C. Pomeroy, Marc V. d'Entremont, and Charles M. Francis published their study : Canadian Estimate of Bird Mortality Due to Collisions and Direct Habitat Loss Associated with Wind Turbine Developments.   The abstract of the study states:  We estimated impacts on birds from the development and operation of wind turbines in Canada considering both mortality due to collisions and loss of nesting habitat. We estimated collision mortality using data from carcass searches for 43 wind farms, incorporating correction factors for scavenger removal, searcher efficiency, and carcasses that fell beyond the area searched.   On average, 8.2 ± 1.4 birds (95% C.I.) were killed per turbine per year at these sites, although the numbers at individual wind farms varied from 0 - 26.9 birds per turbine per year. Based on 2955 installed turbines (the number installed in Canada by December 2011), an estimated 23,300

Bird Deaths at Wind Farms (Part 4)

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Smithsonian-Sponsored Study of Bird Deaths at Monopole Wind Farms  In a study published in December 2013, three scientists have attempted to estimate the number of bird deaths associated with tower design and height. See Scott R. Loss, Tom Will, Peter P. Marra, Estimates Of Bird Collision Mortality At Wind Facilities In The Contiguous United States.  The sponsors of the study included the Migratory Bird Center, Smithsonian Conservation Biology Institute, National Zoological Park; the U.S. Fish and Wildlife Service, Division of Migratory Birds, Midwest Regional Office; and the Oklahoma State University The study suggests that the trend toward taller towers could be leading to more deaths. On the other hand, the new research also reveals that siting fewer new turbines in California and more in the Great Plains – where the wind resource is rich and increasingly being exploited – could decrease the risk to birds. This study did not focus at the species level, but instead an

Bird Deaths at Wind Farms (Part 3)

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The Smallwood Study Presents Highest Estimate of Bird Deaths to Date The Research In an earlier post , I mentioned the current research on bird deaths at wind farms. Scientists/industry have conducted five major studies to date: 2013 Smallwood Study: 573,000 bird deaths per year. 2013 Canadian Bird Mortality Study: 233,000 bird deaths per year, and habitat displacement of 57,000 breeding pairs. 2009 U.S. Fish & Wildlife Service Study: 440,000 per year. 2013 Smithsonian- sponsored  Study: 140,000 to 328,000 per year (limited to monopole turbines). Wind Industry Estimate: 58,000 per year. Over the next several days, I'll discuss each study.   The Smallwood Study: In March 2013, biologist K. Shawn Smallwood published his study in the March 2013 issue of the  Wildlife Society Bulletin . His estimate of bird fatalities at wind farms is the highest to date. http://onlinelibrary.wiley.com/doi/10.1002/wsb.260/abstract   He estimates that, in 2

Bird Deaths at Wind Farms (Part 2)

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Finding Dead Birds at the Base of Wind Turbines: The Protocol In my last post , I listed the studies estimating bird deaths at wind farms. I plan to discuss each of them over the next week.  Research Protocol: But first, I want to describe the methodology for most of these studies. You can see these procedures in action in the video about bird deaths at the Altamont Pass wind farm here.  The discussion runs from 9:56 to 11:00 minutes into the clip.  The developer/operator should place wildlife biologists into the wind farm on a regular basis to do a carcass count. Ideally, assuming the developer devotes the needed resources, the biologist should conduct the fatality searches within a radius of 50 meters of the turbine base. The searcher should mark out 100 meter square plots to record carcass findings for study longitudinally.  Scientists studying bird fatalities recommend the use of a search protocol involving 120 meter long transects spaced at 20 meter in

Bird Deaths at Wind Farms (Part 1)

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Growth of Farms Puts More Birds At Risk Introduction A 2008 Department of Energy report calls for the U.S. to generate 20% of its electricity from wind by 2030. By then, experts expect wind turbines to kill at least one million birds each year, and probably significantly more, depending on how many turbines developers build over that time. Wind farms are also expected to impact almost 20,000 square miles of terrestrial habitat, and over 4,000 square miles of marine habitat by 2030, some critical to threatened species. Deaths will come to birds who hold our identity and imagination, like Bald Eagles and other raptors. Turbines also kill birds listed as threatened or endangered unless developers carefully plan and implement wind farms. Onshore, these species include Golden Eagles, Whooping Cranes, sage-grouse, prairie-chickens, and many migratory songbirds. Offshore, species at risk include Brown Pelicans, Northern Gannets, sea ducks, loons, and terns, among other bird

Our Tolerance for Bird Deaths at Energy Facilities

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Significant Losses  at Power Plants  and  Transmission Lines Bird Populations Slumping: Since the release of bird status reports at the Asilomar Conference, bird populations have continued to slump, and the list of North American birds with declining populations or otherwise at risk at the regional and continental levels has increased since 2002 where 131 species were then designated (USFWS 2002).  Today, these include 147 species on the 2008 Birds of Conservation Concern list (USFWS 2008), 92 birds federally listed as Threatened or Endangered on the Endangered Species Act (ESA), State-listed species, and species listed as high priorities on the U.S. Shorebird Conservation Plan, among others.  The growing documented and suspected impacts of structures on birds—from direct collision mortality, barotrauma, electrocutions, cumulative effects, and from habitat fragmentation, disturbance and site avoidance—bode poorly for our b

Wind Power and Eagles on Collision Course

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American Bird Conservancy Will Sue the U.S. Department of Interior  In a news release issued yesterday,  Washington, D.C.-based American Bird Conservancy (ABC) has announced its intention to sue the U.S. Department of the Interior (DOI). [They explain that they plan] to charg[e] the agency with multiple violations of federal law in connection with its recent decision to offer wind energy companies and others to obtain 30-year eagle take permits. The previous rule provided for a maximum duration of five years for each permit, which authorizes projects to "take" (i.e., injure, kill or otherwise disturb) eagles. On April 30, ABC sent the DOI and the U.S. Fish and Wildlife Service (FWS) a notice of intent to sue , and the group has chosen public interest law firm Meyer Glitzenstein & Crystal to represent it. ABC argues that the new eagle take rule violates the National Environmental Policy Act (NEPA), the Endangered Species Act (ESA), and the Ba