An example is what is happening in the Mojave Desert, in California, where the world's largest solar thermal power plant, the Ivanpah Solar Electric Generating System, is located. According to a report from the US Fish and Wildlife Service, this gigantic structure was transformed into a bird graveyard.
According to the newspaper La Tercera, this construction of 350,000 mirrors would incinerate some 28,000 birds per year in flight, an average of one every two minutes. Birds and bats tend to chase insects attracted to sunlight by reflecting rays, but are killed by impact with the ground and other objects.
But heat is also an important risk factor: the building has three towers with 40 floors of boilers that deliver steam to the electricity generators and the temperature there can reach 540 °, with which the heat "fries" many of the poor birds.