Its aim is to find out the migration routes, the heights and speeds at which the whooper swans fly, and the effects of weather conditions on the swans' flight patterns. This data will then be analysed in relation to existing offshore wind farms positioned in the Greater Wash and East Irish Sea areas, as well as potential wind farm sites.

A century ago prairie chickens may have been the most common wild bird on the High Plains. Today's lesser prairie chicken population is thought to be just 3 percent of what it was a century ago. Wildlife experts say the reason is simple: native grasslands are disappearing and without the habitat they need, prairie chickens are dying off. ...And now wind turbines threaten to blanket parts of the grassland.

As the Obama administration pursues more homegrown energy sources, a new government report faults energy production of all types - wind, ethanol and mountaintop coal mining - for contributing to steep drops in bird populations. The first-of-its-kind government report chronicles a four-decade decline in many of the country's bird populations and provides many reasons for it, from suburban sprawl to the spread of exotic species to global warming.

The major ecological concern when five wind turbines were built here several years ago was whether they would kill migrating birds. They have, including two ospreys and a peregrine falcon. But as it turns out, it isn't the death of birds that is drawing the most attention. The real casualty is bats. The New Jersey Audubon Society is halfway through a three-year study on the impact of the turbines, and so far twice as many bats as birds have died.

The 500 ducks that died in the Alberta oilsands pale in comparison to the thousands of birds killed by cats or by crashing into Toronto office towers or flying into windmills, says Conservative MP Brian Jean. ...At the committee, he questioned federal officials about "how do you balance" 500 ducks who died in an oilsands tailings pond with 6,000 killed annually on Toronto skyscrapers and 200,000 caught in wind turbines.

Wildlife researcher Jim Wiegand says "Green energy is a cover up and a lie because birds of prey are getting killed, people wouldn't believe how these turbines chop them up." Many members of the Pit River Tribe were among the protestors outside the Shasta County Administration Center touting the deadly effects wind turbines have on birds, particularly bald eagles.

Saying its blades will leave eagle blood in the air and on the ground, opponents of the Hatchet Ridge Wind Project are planning a protest rally. "It just really needs to be relooked at," said Radley Davis, a member of the Pit River Tribe and one of the protest organizers. The protest will be at noon Friday in front of the Shasta County Administration Center, organizers said.

Wendy Perrone, executive director of the Three Rivers Avian Center in Brooks, W.Va., said Friday that she had not seen all the details about the project, but there are some concerns. "The mountain range is a migration route used for many decades and centuries....from butterflies to bats up to and including eagles," she said. Windmill projects have a potential for killing bats. Why this happens is not yet clear, Perrone said.

Wind energy developers in New York now have guidelines on how to survey potential turbine sites for their impact on birds and bats. Earlier this month, the state Department of Environmental Conservation issued its advice regarding how to minimize damage to bat and bird habitats. "These guidelines set forth DEC's recommendations to commercial wind energy developers on how to characterize bird and bat resources at on-shore wind energy sites and how to estimate and document impacts resulting from the construction and operation of these projects."

New York State Department of Environmental Conservation (DEC) Commissioner Pete Grannis today announced that the agency has issued guidelines for evaluating the potential impacts of commercial wind energy projects on birds and bats in New York State. "While wind energy has significant environmental benefits when compared to energy produced from fossil fuel, DEC must consider any potential negative environmental impacts of wind energy production when evaluating proposed projects," said Commissioner Grannis.

An effort to protect both wildlife and wind farm profits will benefit from an agreement by 20 wind energy companies to "avoid, minimize and mitigate" the impact of wind turbines on wild birds and mammals, a spokesman for the Pennsylvania Game Commission said. Unlike Virginia, West Virginia, North Carolina and Canada, Pennsylvania has no regulations for wind farm projects, relying instead on voluntary guidelines without enforcement provisions.

Birdsong could be drowned out by the sound of giant wind turbines on a Northumberland moor say protesters, who have now organised a special event to highlight the diversity of species which flock there. Members of Save Our Unspoiled Landscape (Soul) who are fighting plans for six turbines at Barmoor, near Lowick, called in birdsong recording expert Geoff Sample to capture the sounds around the neighbouring Ford Moss, which is a Site of Special Scientific Interest.

The Minerals Management Service's 800 page Final Environmental Impact Statement on Cape Wind was released on Friday and in a largely favorable review found nearly all impacts to be negligible or minor. The few exceptions, where the 130 turbine wind farm would potentially or certainly have moderate to major impact were on birds, especially marine birds such as terns or sea ducks, on navigation and safety of recreational or commercial fishing boats, although those effects could be mitigated, and on visual resources of Nantucket Sound.

Massachusetts and Vermont wildlife officials are asking the public to help identify bats affected by a mysterious illness known as white nose syndrome. This time of year, bats are normally hibernating in caves and in abandoned mines across the Northeast. But researchers are getting reports of bats weakly flying around in broad daylight or dying on decks and in backyards.

Big plans east of Bend may come down to a small bird, the sage grouse. Central Oregon's first commercial wind farm could be up and running as soon as next year, unless it runs into environmental or other obstacles its backers cannot overcome. The $220 million project would be built on private land 30 miles east of Bend. However, the project is facing some scrutiny over it's impact on the wildlife habitat.

A 10,000-acre ranch that stretches into both Crook and Deschutes counties could be the site for Central Oregon's first commercial wind farm. ...But some environmental and wildlife groups point out it could also further threaten sage grouse and harm other animals. "Our point of view is we want to support renewable energy products. But just because it's renewable energy doesn't mean there aren't impacts," said Brent Fenty, executive director of the Bend-based Oregon Natural Desert Association.

Operators of wind turbines are already under pressure to improve the structures' quake-resistance strength. Now, they face another problem with nature: endangered birds flying into the turbines' blades. The bird strike problem has become so serious that measures to protect the fowl are slowing the spread of wind power as a source of electricity generation. ... A total of 14 birds designated by the government as national treasures, including white-tailed sea eagles, have died at different sites by flying into completed wind turbines.

A new state-federal program will pay farmland owners in 11 Missouri counties to set aside land as habitat and nesting grounds for prairie chickens, which once roamed the state's prairies in the hundreds of thousands. Iowa, New Mexico, and Texas are among the states making similar offers to their farmers to reverse the decline in prairie chicken habitat, according to the USDA's Farm Service Agency.

More than six decades of painstaking conservation efforts that have brought the majestic whooping crane back from the brink of extinction may come undone because of the proliferation of wind farms in the United States. Their flight path takes them over states that have become prime locations for wind farms, a fast-growing, heavily subsidized source of renewable energy.

A group that wants to slow the rush of wind turbines to the Texas Coast is asking the Federal Aviation Administration to require environmental studies for Texas wind farms. The Coastal Habitat Alliance has filed a petition with the FAA asking for the change in policy. This is the latest in a series of attempts the group has made to fight the emergence of wind farms on the coast, which is a major migratory bird route. The alliance worries about the impact thousands of wind turbines could have on the bird population.