The Bureau of Land Management Solar Energy Study Areas (SESAs) are almost always quiet, with few signs of life other than windblown plants sparsely distributed across flat and largely featureless lands, and no sound except for the wind rustling brittle branches. During daylight hours, the sun beats down relentlessly. An occasional lizard is seen racing across the desert floor. Droppings from coyotes, rabbits and other small mammals are sometimes visible, and red-tailed hawks or turkey vultures circle infrequently overhead, searching the stark, sparse terrain for prey or carrion.