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Assessing Impacts of Wind-Energy Development on Nocturnally Active Birds and Bats: A Guidance Document

Our purpose is to provide researchers, consultants, decision-makers, and other stakeholders with guidance to methods and metrics
for investigating nocturnally active birds and bats in relation to utility-scale wind-energy development. The primary objectives of such studies are to
1) assess potential impacts on resident and migratory species, 2) quantify fatality rates on resident and migratory populations, 3) determine the causes
of bird and bat fatalities, and 4) develop, assess, and implementmethods for reducing risks to bird and bat populations and their habitats.Wedescribe
methods and tools and their uses, discuss limitations, assumptions, and data interpretation, present case studies and examples, and offer suggestions
for improving studies on nocturnally active birds and bats in relation to wind-energy development. We suggest best practices for research and
monitoring studies using selected methods and metrics, but this is not intended as cookbook.Wecaution that each proposed and executed studywill
be different, and that decisions about which methods and metrics to use will depend upon several considerations, including study objectives, expected
and realized risks to bird and bat populations, as well as budgetary and logistical considerations. Developed to complement and extend the existing
National Wind Coordinating Committee document ‘‘Methods and Metrics for Assessing Impacts of Wind Energy Facilities on Wildlife’’
(Anderson et al. 1999), we provide information that stakeholders can use to aid in evaluating potential and actual impacts of wind power
development on nocturnally active birds and bats. We hope that decision-makers will find these guidelines helpful as they assemble information
needed to support the permitting process, and that the public will use this guidance document as they participate in the permitting processes. We
further hope that the wind industry will find valuable guidance from this document when 1) complying with data requirements as a part of the
permitting process, 2) evaluating sites for potential development, 3) assessing impacts of operational wind-energy facilities, and 4) mitigating local
and cumulative impacts on nocturnally active birds and bats.s

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Date Of Record Release 2010-02-23 16:22:12
Description Our purpose is to provide researchers, consultants, decision-makers, and other stakeholders with guidance to methods and metrics
for investigating nocturnally active birds and bats in relation to utility-scale wind-energy development. The primary objectives of such studies are to
1) assess potential impacts on resident and migratory species, 2) quantify fatality rates on resident and migratory populations, 3) determine the causes
of bird and bat fatalities, and 4) develop, assess, and implementmethods for reducing risks to bird and bat populations and their habitats.Wedescribe
methods and tools and their uses, discuss limitations, assumptions, and data interpretation, present case studies and examples, and offer suggestions
for improving studies on nocturnally active birds and bats in relation to wind-energy development. We suggest best practices for research and
monitoring studies using selected methods and metrics, but this is not intended as cookbook.Wecaution that each proposed and executed studywill
be different, and that decisions about which methods and metrics to use will depend upon several considerations, including study objectives, expected
and realized risks to bird and bat populations, as well as budgetary and logistical considerations. Developed to complement and extend the existing
National Wind Coordinating Committee document ‘‘Methods and Metrics for Assessing Impacts of Wind Energy Facilities on Wildlife’’
(Anderson et al. 1999), we provide information that stakeholders can use to aid in evaluating potential and actual impacts of wind power
development on nocturnally active birds and bats. We hope that decision-makers will find these guidelines helpful as they assemble information
needed to support the permitting process, and that the public will use this guidance document as they participate in the permitting processes. We
further hope that the wind industry will find valuable guidance from this document when 1) complying with data requirements as a part of the
permitting process, 2) evaluating sites for potential development, 3) assessing impacts of operational wind-energy facilities, and 4) mitigating local
and cumulative impacts on nocturnally active birds and bats.s
Classification
Resource Type
Format
Subject
Source Bats and Wind Energy (BWEC)
Keyword Bats, Birds, Methods, Metrics, Migration, Wind energy.
Selector Selection Committee
Date Of Record Creation 2010-02-23 16:16:43
Education Level
Date Last Modified 2010-04-20 13:40:52
Creator Thomas H. Kunz, Edward B. Arnett, Brian M. Cooper, et al.
Language English
Date Record Checked: 2010-02-23 00:00:00 (W3C-DTF)

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