Better Plan, Wisconsin

BIRD KILL AT LAUREL MOUNTAIN INDUSTRIAL WIND FACILITY

By Peter Shoenfeld, The Highlands Voice,

SOURCE West Virginia Highlands Conservancy, wvhighlands.org

November 7, 2011 

On October 1st and 2d, approximately 500 birds were killed in an accident at the new Laurel Mountain industrial wind facility, according to Division of Natural Resources Ornithologist Rich Bailey. The fatalities occurred by collision and exhaustion at the Laurel Mountain substation, where the lights were left on during foggy weather. Over thirty species of mixed migratory songbirds were included, primarily blackpoll warblers. A Green Heron was also a victim and is mentioned here to emphasize the general nature of this avian threat. DNR may recommend that lights be turned off there in the time period August 1 through November 1, or an even broader length of time.

The birds were found October 3 by AES staff and reported to contractor Stantec, who took main responsibility going forward, including notification of Division of Natural Resources and United States Fish and Wildlife Service that day.

DNR expects to have a press release on this matter in early November, five weeks or more after the actual event. A detailed report from Stantec to USFWS is available on the incident, subsequent recoveries, and mortality from the USFWS field office in Elkins as we go to press November 1. This is the most thorough narrative currently available. Developer/Operator AES has chosen to remain directly silent about the event, as has the Elkins Intermountain who was notified weeks ago. The story was covered by the Charleston Gazette.

A similar event occurred at the nearby Mountaineer Wind Facility on May 22-23, 2003. Unusually heavy fog enshrouded the region the night of the 22d and persisted until the afternoon of the 23d. Bright sodium vapor lights were left on at a substation and an estimated 33 songbirds were killed by collisions.

There was also a major bird kill due to excess lighting in fog at Tucker County High School, just down the road from Mountaineer on September 29, 2008. About 500 birds were killed, most of them warblers.

Other similar events have been documented in West Virginia at least twice in the not too distant past.

Through their short collective memory and other failings, the wind facility operators are fast earning a reputation as unfit stewards of the little bit of nature left after their developments are complete.

Early on the morning of September 29, 2008, a large bird kill at the Tucker County High School near Hambleton, West Virginia, was reported to Division of Natural Resources personnel. DNR Wildlife Resources Section (WRS) biologists, along with conservation officers, representatives from the Tucker County Health Department, the U.S. Fish and Wildlife Service (USFWS), and the U.S. Forest Service responded to the report and found evidence of a large bird strike at the school.

Officials recovered 501 birds representing 31 species at the site. Seven birds recovered and were released alive. The remaining 494 specimens were collected and identified by WRS biologists. More than 80 percent of the birds were warblers. Bird banders from the Allegheny Front Migratory Observatory and Powdermill Nature Reserve verified the identifications.

Officials collected the majority of the birds along or near the outside walls of the school and from the school roof. Some specimens were also collected from the adjacent parking areas and athletic field. All evidence was consistent with a large scale collision event. Initial speculation suggested that disease and/or poisoning caused the deaths, but no evidence supports this claim.

Additionally, as part of standard procedure, officials from the West Virginia Department of Health and U.S. Department of Agriculture tested sample specimens for both West Nile Virus and Avian Influenza. All samples tested negative for both diseases. An additional sample was sent to the Southeastern Cooperative Wildlife Disease Laboratory in Athens, Georgia, for necropsy. All specimens examined at this facility exhibited trauma consistent with a bird strike, including extensive hemorrhage, and fractured skulls, wings and legs.

Officials from the WRS and the USFWS are working with the Tucker County School Board of Education and Allegheny Power to remedy the situation at the Tucker County High School. They will modify existing lighting to make the site less attractive to migratory birds. The site will be monitored for additional mortality for the remaining 2008 migratory period and this monitoring effort is planned to continue into future years.

In the case of bird kill at Laurel Mountain industrial wind facility it is unclear what the response will be. Because of the public silence of the Developer/Operator AES it is unclear what steps it has taken or will take to investigate the kill as well as what steps it plans to prevent future incidents.

The peak of neotropical songbird migration occurs in late September and early October and is concentrated along mountain ridges. Large bird strikes like the Tucker County High School event are not uncommon throughout North America during this time frame.

Events like these occur when several environmental conditions occur simultaneously in proximity to a lighted man-made structure. These conditions typically include dense fog, southerly winds and a dome of artificial light surrounding a structure. The event can be further amplified by a period of rain prior to the event that concentrates birds by delaying migration.

This was the case with the Tucker County event. Three days of rain prior to September 29 were followed by a passing cold front that generated southerly winds and ideal migration conditions. These birds headed south, encountered dense fog along Backbone Mountain, were attracted by the dome of light surrounding the school, became disoriented, and began to circle the structure, crashing into windows and the outside walls. Some birds may have died from exhaustion from constant circling.

Similar events have been documented in West Virginiain the past. Forty birds of 14 species died on October 5, 1999, in Monterville in Randolph County; and at Snowshoe Mountain Resort in Pocahontas County on October 15, 1985, officials collected 1,336 birds of 30 species.

Note from the BPWI Research Nerd: This map shows the Golden Eagle range map, including a section in our state of Wisconsin where wind development is planned.

WIND POWER TURBINES AT ALTAMONT PASS THREATEN PROTECTED BIRDS

Read entire story at the source: Los Angeles Times, www.latimes.com

June 6, 2011

By Louis Sahagun

“It would take 167 pairs of local nesting golden eagles to produce enough young to compensate for their mortality rate related to wind energy production,” said field biologist Doug Bell, manager of East Bay Regional Park District’s wildlife program. “We only have 60 pairs.”

Scores of protected golden eagles have been dying each year after colliding with the blades of about 5,000 wind turbines along the ridgelines of the Bay Area’s Altamont Pass Wind Resource Area, raising troubling questions about the state’s push for alternative power sources.

The death count, averaging 67 a year for three decades, worries field biologists because the turbines, which have been providing thousands of homes with emissions-free electricity since the 1980s, lie within a region of rolling grasslands and riparian canyons containing one of the highest densities of nesting golden eagles in the United States.

“It would take 167 pairs of local nesting golden eagles to produce enough young to compensate for their mortality rate related to wind energy production,” said field biologist Doug Bell, manager of East Bay Regional Park District’s wildlife program. “We only have 60 pairs.”

The fate of the Bay Area’s golden eagles highlights the complex issues facing wildlife authorities, wind turbine companies and regulatory agencies as they promote renewable energy development in the Altamont Pass and across the nation and adds urgency to efforts to make the technology safer for wildlife, including bats, thousands of which are killed each year by wind turbines.

Gov. Jerry Brown in April signed into law a mandate that a third of the electricity used in California come from renewable sources, including wind and solar, by 2020. The new law is the most aggressive of any state.

The development and delivery of renewable energy is also one of the highest priorities of the Interior Department, which recently proposed voluntary guidelines for the sighting and operation of wind farms. Environmental organizations led by the American Bird Conservancy had called for mandatory standards.

The U.S. Fish and Wildlife Service authorizes limited incidental mortality and disturbance of eagles at wind facilities, provided the operators take measures to mitigate the losses by replacing older turbines with newer models that are meant to be less hazardous to birds, removing turbines located in the paths of hunting raptors and turning off certain turbines during periods of heavy bird migration. So far, no wind energy company has been prosecuted by federal wildlife authorities in connection with the death of birds protected by the Migratory Bird Act, the Bald and Golden Eagle Protection Act or the federal Endangered Species Act.

The survival of the Bay Area’s golden eagles may depend on data gathered by trapping and banding and then monitoring their behavior in the wilds and in wind farms.

On a recent weekday, Bell shinnied up the gnarled branches of an old oak to a bathtub-sized golden eagle nest overlooking a canyon about 25 miles south of Altamont Pass.

Two fluffy white and black chicks, blinked and hissed nervously as he scooped them up and placed them into cloth sacks. He attached the sacks to a rope and delicately lowered them 45 feet to the ground.

“As adults, these birds could eventually wind up anywhere in the Western United States or Mexico — that is, if they live that long,” Bell said.

With field biologist Joe DiDonato, he banded the birds’ legs and recorded their vital statistics in a journal that chronicles more than a decade of raptor research in the region. The message is a grim one.

Each year, about 2,000 raptors are killed in the Altamont Pass by wind turbines, according to on-site surveys conducted by field biologists. The toll, however, could be higher because bird carcasses are quickly removed by scavengers.

Environmentalists have persuaded the energy industry and federal authorities — often through litigation — to modify the size, shape and placement of wind turbines. Last year, five local Audubon chapters, the California attorney general’s office and Californians for Renewable Energy reached an agreement with NextEra Energy Resources to expedite the replacement of its old wind turbines in the Altamont Pass with new, taller models less likely to harm birds such as golden eagles and burrowing owls that tend to fly low.

The neighboring Buena Vista Wind Energy Project recently replaced 179 aging wind turbines with 38 newer and more powerful 1-megawatt turbines. That repowering effort has reduced fatality rates by 79% for all raptor species and 50% for golden eagles, according to a study by Shawn Smallwood, an expert on raptor ecology in wind farms.

It remains unclear, however, whether such mega-turbines would produce similar results elsewhere, or reduce fatalities among bats.

Nationwide, about 440,000 birds are killed at wind farms each year, according to the Fish and Wildlife Service. The American Wind Energy Assn., an industry lobbying group, points out that far more birds are killed each year by collisions with radio towers, tall buildings, airplanes, vehicles and in encounters with hungry household cats.

And while “there’s quite a bit of growth to come in wind energy development, it won’t be popping up everywhere,” said attorney Allan Marks, who specializes in the development of renewable energy projects. “That is because you can only build these machines where the wind is blowing. So a lot of the new development will be replacing old facilities in areas such as Cabazon, the Tehachapi Mountains and Altamont Pass.”

Nonetheless, the generating facilities will continue to threaten federally protected species such as eagles and California condors, a successfully recovered species that is expanding its range into existing and proposed wind farms in Kern and Fresno counties.

NextEra Energy’s proposed North Sky River Project calls for 102 wind turbines across 12,582 acres on the east flank of the Piute Mountains, about 17 miles northeast of the Tehachapis. A risk assessment of that project warned that condors spend considerable time soaring within the potential rotor-swept heights of modern wind turbines, which are more than 200 feet tall. It also pointed out that condor roosts are as close as 25 miles away.

“We taxpayers have spent millions of dollars saving the California condor from extinction,” said Gary George, spokesman for Audubon California. “How’s the public going to feel about wind energy if a condor hits the turbines?”

In the meantime, raptors such as golden eagles, American kestrels, red-tail hawks and prairie falcons continue to compete with wind turbines for their share of the winds blowing from the southwest through the Altamont Pass.

Golden eagles weigh about 14 pounds, stand up to 40 inches tall and are equipped with large hooked bills and ice-pick talons. Their flight behavior and size make it difficult for them to maneuver through forests of wind turbine towers, especially when distracted by the sight of prey animals such as ground squirrels and rabbits.

“The eagles usually die of blunt-force trauma injuries,” Bell said. “Once, I discovered a wounded golden eagle hobbling through tall grass, about a quarter mile from the turbine blades that had clipped its flight feathers.”

As he spoke, an adult male golden eagle glided a few yards above the contours of Buena Vista’s sloped grasslands, prowling for prey. It floated up and over a rise, narrowly evading turbine blades as it followed the tantalizing sight of a ground squirrel scurrying through the brush.

Bell sighed with relief. “A wind farm owner once told me that if there were no witnesses, it would be impossible to prove a bird had been killed by a wind turbine blade,” he said. “My response was this: If you see a golden eagle sliced in half in a wind farm, what other explanation is there?”