National Geographic : 1956 Jan
© National Geographic Society 17 Bald Eaglet Backs into Space to Evade an Intruder in His Two-decked Penthouse The parent birds built for the future, adding hundreds of pounds of twigs to the top of a 120-foot Douglas fir. Here each season their young grow, exercise muscles, and learn to fly. Fully fledged, this two-month-old will venture from home soon. Frank Craighead dropped in after dinner to check the menu. He found snakeskins, mouse skulls, and remains of fish. His brother John made the picture from a tree close by.