Old Bird, Inc.
605 W. State St.
Ithaca, NY 14850
(607) 272-1786
June 27, 2007
Stantec Consulting Ltd.
361 Southgate Dr.
Guelph, ON N1G 3M5:
To Stantec Consulting:
Please find below a comment on a gap in your Bird Report for the Environmental
Impact Statement of the Wolfe Island Wind Power project. I have appended my
credentials for making this comment.
The lack of any research toward understanding and mitigating the impact to
nocturnal migrants (e.g., songbirds) stands out as a serious omission from the Bird Report
(Appendix C5). This issue is minimized first by stating that the mortality to such species
has been shown to be small, though no references or figures are cited. Second, a study by
EchoTrack (2005) in which some radar targets showed avoidance behavior to turbines is
presented (C5: 1.2.1, 4.3.1, 4.3.2).
Regarding the first case, at the time the Bird Report was published (April 2007)
there were few avian mortality studies in eastern North America from which to draw any
regional conclusions on avian mortality from modern wind turbines (> 100 m height).
Two of these are the Mountaineer Wind Project in northern West Virginia and the
Buffalo Mountain, Tennessee study. Both these are inland wind projects in the
Appalachian Mountains, more than 1000 km to the south of Wolfe Island. Since the
publication of the Stantec Bird Report, mortality data from a new wind project has
become available. The Maple Ridge wind project (195 turbines) is only about 70 km
southeast of Wolfe Island and a three-year mortality study began in summer 2006. This
study is somewhat unique in that it included daily mortality checks at 10 turbines. The
fall 2006 report (mapleridgewind.com/impact.htm) indicates a rate of 9.59 birds killed
per turbine and 24.53 bats killed per turbine after scavenging and surveyor efficiency
rates were incorporated. Based on the daily mortality survey data, the 195-turbine project
is estimated to have killed about 2000 birds and 6000 bats in the fall migration period
(June 17 – Nov 15). The annual total would be higher once mortality data from a spring
season was integrated..
It is important to understand that the Maple Ridge wind project is at an inland site
with no major geographic features that might concentrate night migrants. A radar study at
Maple Ridge in fall 2004 found a mean nocturnal passage rate of 158 targets/km/hr with
8.0% of the targets below 125 m (turbine height). A similar radar study in fall 2006 at a
proposed wind project in Cape Vincent, NY, just across the St. Lawrence River from
Wolfe Island, found a mean nocturnal passage rate of 345 targets/km/hr with 7.7% below
125 m (stlawrencewind.com/supplementary.html - scroll down to nocturnal marine radar
survey). The Cape Vincent radar study found more than twice the migration density
below turbine height compared to that documented at Maple Ridge, 70 km to the
southeast. Furthermore, the Cape Vincent, NY radar study included about a third of its
survey area over the water of the St. Lawrence River, which likely had lower passage rate
of small passerines flying below turbine height than the area over land to the south of the
river. This suggests that the overland portion of the study area had even higher migration
density.
While the EchoTrack study you cite does indicate that some birds avoid turbines,
one must ultimately still realize and consider that avian mortality does still occur at wind
projects. Wolfe Island, due to its proximity to major water bodies, has a high incidence of
low cloud and foggy conditions, which will limit avian avoidance capability and which
are will exacerbate bird mortality compared to inland sites without such weather
conditions.
Without an actual radar study (or previous wind turbine mortality study) on Wolfe
Island, one is left to theorize about possible wind turbine mortality from more
circumstantial data. My formula considers the closest mortality study to Wolfe Island
(Maple Ridge) and the closest radar study to Wolfe Island (St. Lawrence Wind radar
study in Cape Vincent, NY). I also consider the fact that Wolfe Island is not an inland site
with generic migration patterns. It very likely has complex low altitude migration
concentration dynamics associated with the St. Lawrence River and Lake Ontario. From
these factors, along with the prevalence of low cloud and foggy conditions on Wolfe
Island, I draw the conclusion that bird and bat mortality per turbine could be much higher
than that at Maple Ridge.
Simply stated, I think Wolfe Island has the potential to have the highest bird
mortality per turbine (or Megawatt) yet documented at a wind project in North America.
I strongly suggest that at least a one-year radar study be conducted on Wolfe Island prior
to considering construction in order to verify whether abnormally high nocturnal rates of
passage below turbine height might exist and to document any migration channeling
dynamics on the island. Proceeding without such information, the Wolfe Island Wind
Project runs the risk of stumbling into being a high publicity bird killer. With all the good
intentions of using wind energy for providing green energy, the wind industry does not
need the negative publicity from large avian impacts at inadequately researched wind
projects.
Sincerely,
William R. Evans
Executive Director
Curriculum vitae
William Ross Evans
Ornithologist
(Specializing in the study of nocturnal bird migration)
General accomplishments: Over the past decade developed the technique of acoustic monitoring of avian
night flight calls and have been a leading researcher in mitigating bird mortality at tall man-made
structures. See publications listed below for reference and general overview on this subject.
Current positions:
Old Bird Inc.
Position: Executive Director
Description: A 501(c)3 nonprofit corporation dedicated to facilitating acoustic monitoring of avian night
flight calls. This organization has two primary branches of activity. One is the development and distribution
of information and tools for advancing the method and utility of monitoring night flight calls of migrating
birds. The second is the establishment and maintenance of networks of acoustic monitoring stations for
gathering and distributing night flight call data for environmental education and understanding.
Contact: www.oldbird.org
Communications Tower Working Group (CTWG)
Position: Principle Investigator
Description: A study peer-reviewed and coordinated by the US Fish and Wildlife Service chaired CTWG.
The aim of the study is to determine the role of the flash rate of aviation hazard warning lighting on tall
man-made structures in leading birds to congregate around such structures. 2002 – ongoing.
Contact: Albert Manville, USFWS (703) 358-1963.
Research Planning, Inc. (RPI)
Position: Principle Investigator (subcontracted)
Description: Responsible for avian datagap analysis in the Minerals Management Service (MMS) contract
“Worldwide Synthesis and Analysis of Existing Information Regarding Environmental Effects of
Alternative Energy Uses on the Outer Continental Shelf”. 2006-2007.
Contact: Jacqui Michel, RPI, 803-256-7322
New York State Energy Research Authority
Position: Principal Investigator (subcontracted)
Description: Analyze nocturnal bird migration characteristics and test acoustic strike indicator methodology
at Maple Ridge wind project in Upstate New York.
Contact: Mark Watson, NYSERDA, 518-862-1090
Publications
Evans W.R., Akashi, Y., Altman, N.S., and Manville, A.M.II. 2007. Response of night-migrating birds in
cloud to colored and flashing light. North American Birds 60(4):xxx (in press).
Evans, W.R. 2005. Monitoring avian night flight calls - the new century ahead. Passenger Pigeon 67:1524. http://www.oldbird.org/W.Evans%20-%20New%20Century%20Ahead.pdf
Evans W.R. and M. O’Brien. 2002. Flight Calls of Migratory Birds - Eastern North American landbirds.
Old Bird, Inc. (www.oldbird.org) [CD-Rom].
Larkin, R.P., Evans, W.R., and R. H. Diehl. 2002 Nocturnal flight calls of Dickcissels and Doppler radar
echoes over south Texas in spring. Journal of Field Ornithology 73:2-8.
Evans W.R. 2000. Applications of avian night flight call monitoring for tower kill mitigation. Transcripts
of Proceedings of the Workshop on Avian Mortality at Communication Towers, August 11, 1999, Cornell
University, Ithaca, NY. http://migratorybirds.fws.gov/issues/towers/agenda.html (scroll down to paper).
Evans, W.R. and A.M. Manville, II (Eds.). 2000. Avian mortality at communications towers. Transcripts of
Proceedings of the Workshop on Avian Mortality at Communication Towers, August 11, 1999, Cornell
University, Ithaca, NY. http://migratorybirds.fws.gov/issues/towers/agenda.html
Evans, W.R. 2000. Applications of acoustic bird monitoring for the wind power industry. PNAWPPM-III.
2000. Proceedings of National Avian - Wind Power Planning Meeting III, San Diego, California, May
1998. Prepared for the Avian Subcommittee of the National Wind Coordinating Committee by LGL Ltd.,
King City, Ont. 202 p. http://www.nationalwind.org/pubs/avian98/default.htm (then scroll down to paper).
Evans, W.R. and K.V. Rosenberg. 2000. Acoustic monitoring of night-migrating birds: a progress report. In
Bonney, Rick, David N. Pashley, Robert J. Cooper, and Larry Niles, eds. Strategies of Bird Conservation:
The Partners in Flight Planning Process. Proceedings of the 3rd Partners in Flight Workshop; 1995 October
1-5; Cape May, NJ. Proceedings RMRS-P-16. Ogden, UT: U.S. Department of Agriculture, Forest Service,
Rocky Mountain Research Station. http://birds.cornell.edu/pifcapemay/evans_rosenberg.htm
Evans, W.R. and D.K. Mellinger 1999. Monitoring Grassland Birds in Nocturnal Migration. Studies in
Avian Biology No. 19:219-229.
Evans, W.R. 1994. Nocturnal flight call of Bicknell’s Thrush. Wilson Bulletin 106:55-61.
Positions or contracts held:
Cornell Laboratory of Ornithology (CLO)
Position: Research Associate 1994-1998
Contact: Dr. Christopher Clark, Director of Bioacoustics Research Program (607) 254-2408
Nebraska Public Power District (NPPD)
Position: Principal Investigator
Description: Acoustic monitoring of night migrating birds at proposed wind farm, 1996-1997.
Contact: Jim Jenniges, NPPD environmental staff (308) 236-2293
United States Fish and Wildlife Service (USFWS)
Position: Principal Investigator
Description: Project using acoustic censusing of night migrating birds to determine the species composition
and relative numbers of migrants crossing the Mexican border region of south Texas, 1999-2001.
Contact: Bill Howe, USFWS (505) 248-6875
US Bureau of Reclamation (BOR)
Position: Principal Investigator
Description: Project using acoustics in remote censusing of breeding Willow Flycatchers along the
Colorado River. 1998-2000.
Contact: Barbara Raulston, BOR (702) 293-8788
Wisconsin Public Service Corporation (WPSC)
Position: Principal Investigator
Description: Monitoring the species composition, altitude characteristics, and numbers of night-migrating
birds for assessing the potential impact of wind turbines in Northern Wisconsin. 1999-2001.
Contact: Shawn Puzen, WPSC environmental staff (920) 433-1094
New York State Tower Kill Survey
Position: Director
Description: A volunteer-operated survey that monitored bird mortality at communications towers in New
York State in fall 1998-2000.
Workshop on Avian Mortality at Communications Towers
Position: Co-organizer
Description: The first ever conference on the issue of bird mortality at communications towers held in
conjunction with the American Ornithologist’s Union meeting at Cornell University on August 11 th, 1999.
Co-organized by Albert Manville of FWS and co-sponsored by the FWS, American Bird Conservancy, and
the Ornithological Council.
Contact: Albert Manville, USFWS (703) 358-1963
UNIsite tower construction project
Position: Ornithological Consultant
Description: Prepare avian section of Environmental Assessment regarding proposed installation of 20
communications towers along the I80 corridor in Nebraska. Five threatened or endangered bird species
involved. 1999-2000.
Contact: Joseph Quandt, Attorney in law firm representing UNIsite (231) 947-7900
Clipper Windpower, LLC
Position: Principal Investigator
Description: Monitoring the species composition, altitude characteristics, and numbers of night-migrating
birds for assessing the potential impact of wind turbines in western Maryland. 2003.
Contact: Kevin Rackstraw , Clipper Windpower LLC, (301) 263-0028.
Ecogen, LLC
Position: Principal Investigator
Description: Monitoring the species composition, altitude characteristics, and numbers of night-migrating
birds for assessing the potential impact of wind turbines in west-central New York State. 2004-2005.
Contact: Tom Hagner, Ecogen LLC, (716) 675-0751.
Catamount Energy
Position: Principal Investigator
Description: Monitoring the species composition, altitude characteristics, and numbers of night-migrating
birds for assessing the potential impact of wind turbines in Vermont and Pennsylvania 2004-2005
Contact: Bob Charlebois, Catamount Energy, (802) 772-6767
2006 Invited Presentations
NYSERDA Wind /Wildlife Technical Workshop
Position: Invited speaker
Contact: Mark Watson, NYSERDA, 518-862-1090
“Toward Wildlife-Friendly wind Power: A focus on the Great Lakes Basin
Position: Invited speaker
Contact: Alex Hoar, USFWS, 413-253-8631