This story from The Register notes that a Canada study says that wind turbines kill bats not by hitting them - echo-location allows bats to avoid the blades - but by causing a sharp drop in air pressure which expands the air in the mammals’ lungs and causes hemorrhaging.

From the story: "The findings indicated that ‘wildlife fatalities at wind turbines are now a bat issue, not a bird issue‘"

Meanwhile, I’m still awaiting word on the start of construction at Lempster Mountain Wind.