Articles filed under Impact on Bats from Canada

Wind turbines killing tens of thousands of bats, including many on the endangered species list

Wind turbines are killing bats, including ones on the endangered species list, at nearly double the rate set as acceptable by the Ontario government, the latest monitoring report indicates. Bats are being killed in Ontario at the rate of 18.5 per turbine, resulting in an estimated 42,656 bat fatalities in Ontario between May 1 and October 31, 2015.
20 Jul 2016

Much-feared Halloween favourites, it’s bats that are facing danger

One looming threat is the growing presence of wind farms — a threat that wasn’t realized until the first turbine went up in northeastern B.C. and killed two Eastern red bats, a species biologists weren’t even aware existed in the province. “It was a real red flag for us that we don’t know enough about our bats and we better figure it out fast.”
30 Oct 2013

Environmental Tribunal discusses acceptable kill rates of endangered bats

Dr Barclay had mentioned he did not agree with Ontario Bat Guidelines for Industrial Wind Turbine projects. When asked why, he answered that the allowable threshold of killing seven bats per year per turbine was inadequate. With the numbers of turbines growing exponentially in North America, the cumulative effects of such a high fatality rate, on top of the effects of white nose syndrome, will cause harm to the species at the population level.
10 Mar 2013

Bats & blades: More research needed on bat, wind farm fatalities

Laura Ellison is an ecologist with the U.S. Geological Survey in Fort Collins, Colorado, who has spent the last 20 years studying bats and other small mammals. Earlier this month she presented on the bat and wind farm issue at the North America Congress for Conservation Biology. "The newer, larger turbines seem to be worse for bats," Ellison said.
30 Jul 2012

Windfarm turbines deadly for birds, bats

"Shockingly high" numbers of bird and bat deaths caused by one of Canada's biggest wind farms should serve as a warning to planners of other projects that may be built in crucial wildlife zones, one of the country's key conservation groups says. ..."We should not be putting these farms in places where the risk is going to be high," he said. "It is a disaster that we can see coming." At the very least, turbines should be shut down at certain times of year to reduce bird kills, he added.
10 Jun 2010

Telling one brown bat from another is no easy task

Sixteen species flutter around B.C.'s urban and rural areas in the nighttime hours, but the Environment Ministry is particularly interested in identifying four species of brown bats. ...Bat populations face numerous threats, ranging from forestry and wind-power development-- bats are often found dead around wind turbines.
6 Jun 2010

Province aims to protect bats

With the growth of the wind energy industry in Southern Alberta, the development of protocol to protect the province's migratory bat population is now underway. Lisa Wilkinson, a species at risk biologist with Alberta Fish and Wildlife and head of the Alberta Bat Action Team (ABAT), said Alberta was a North American pioneer in establishing pre-construction guidelines for wind farm operators.
14 Mar 2010

Bats surpassing birds as ecological concern

New research shows that the study of bat mortality at wind turbines should be the primary ecological concern for developers. ...TransAlta has about 189 MW of wind farms operating in southern Alberta and another 162 MW under construction. By analyzing specimens found on one of TransAlta's farms, Robert Barclay, a biological sciences professor at the university, discovered that the vast majority of bats died not as a result of colliding into the turbines, but as a result of a sudden drop in air pressure in the airspace around the turbines - which destroys their lungs.
11 Jan 2009

'Green' wind turbines prove deadly for bats

Bats and wind turbines make a bad mix. In fact, bats have become an unexpected casualty in the burgeoning wind-power industry, with several thousand bats killed by turbines each year in North America. Now studies are being conducted at the future site of a Peace region wind farm in order to save bats from dropping dead near the whirling blades. ...Most of the wind-farm research has been focused on birds, and little is known about the effect on bats, although new studies are beginning to yield clues on how to minimize the impact of the wind farms on the tiny flying animals.
25 Sep 2008

B.C. study to help bats survive wind farms

Bats may never find wind farms as friendly as belfries, but a three-month study in northeast British Columbia is designed to make the power-generating turbines at least somewhat less deadly. Monitoring devices installed by AltaGas at the site of the proposed Bear Mountain Wind Farm have been recording data on the population and migratory routes of bats in the area since July. In later stages of development, the research is intended to help how the company can make its turbines to more bat-friendly.
23 Sep 2008

Bats fatally battered by wind farm effects

Baerwald, whose team checks for carcasses under turbines at the Summerview wind farm near Pincher Creek, Alta., every morning, says bats are one of the unforeseen casualties in the rush to harness wind power. Several thousand of the tiny flying mammals are killed by the turbines each year across North America, with some farms much more deadly than others. Industry officials say they are determined to reduce the death toll but concede it is not going to be easy since so little is known about the nocturnal creatures. ...The researchers dissected 75 corpses and report that 90 per cent died form internal hemorrhaging consistent with "barotrauma," tissue damage caused by rapid or excessive change in air pressure near the rotor blades.
1 Sep 2008
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