"From the bitter cold polar regions to the lush tropics, birds have found incredible ways to adapt and survive anywhere. White-winged diuca finches nest high upon freezing glaciers and mightily peregrine falcons circle skyscrapers in busy cities. Look up! What birds can do is extraordinary. The statuesque golden eagle spots prey from miles away. You can tell what time of day an owl hunts by looking at the color of its eyes. With its long, muscular...