"A major new study has quashed fears that onshore windfarms are causing long-term damage to bird populations, but found new evidence that some species are harmed when windfarms are built."

"The study by conservationists into the impacts on 10 of the key species of British upland bird, including several suffering serious population declines, concluded that a large majority of species can co-exist or thrive with windfarms once they are operating.

But the study, the largest carried out in the UK into the impact of onshore windfarms on bird life, also found strong evidence that some species suffered serious harm while windfarms are being built."

Severin Carrell reports for the Guardian April 12, 2012. [2]