I took this weeks sky pics at Crex Meadows in October. I thought that this cloud pattern, stretching across the sky, was very intriguing.
Eagles, as well as many other raptors, typically use thermal air currents, thermals, to help them fly with less effort. A thermal is created when warm air, which is heated by the ground, rises. The eagle will sit in this rising air and get a free ride high into the sky. Then they will soar from that altitude in the direction that they want to travel. Since they are already up high in the sky they do not have to do much but glide, which expends much less of their valuable energy. I have heard it said that for every mile that an eagle can climb up in a thermal, that they can travel 7 miles with out expending much energy.