Peregrine Falcons, once teetering on extinction, are regulars at Acadia National Park. Bald Eagles, also once feared to be ready to blink out, have rebounded incredibly and are highly visible in many national parks. During a week-long canoe trip in Yellowstone National Park last fall I was blown away by the birdlife. But how is the overall "state of birds" in America these days? Unfortunately, things aren't entirely as they appear.