Here are the best stories about our avian friends from the public radio show BirdNote , each brief essay illuminating the life, habits, or songs of a particular bird. Why do geese fly in a V-formation? Why are worms so good for you--if you're a robin? Which bird calls, "Who cooks for you? Who cooks for you-all?" From wrens that nest in cactuses to gulls that have a strange red dot on their bills--these digestible and fascinating bird stories are a delightful window to the winged world.