My understanding is that the idea that wind turbines kill birds in huge numbers is based on the original wind turbines. These were much smaller in radius and ha

My understanding is that the idea that wind turbines kill birds in huge numbers is based on the original wind turbines. These were much smaller in radius and had many more blades and spun much faster. Think of a giant farm water-pump windmill. Those things were bird blenders. Modern three blade wind turbines are a different beast, but many people have not caught up with the changes in engineering. [ Also, some of the initial wind farms using the bird blenders (e.g. the Altamont Pass near Livermore, CA) were right on the Pacific Flyway, which is a massive migratory path. ]