This magnificent series celebrates the incredible variety of the world's best-loved creatures and provides fresh insight into their fascinating way of life. Three years in the making, David Attenborough travelled around teh globe, visiting 42 countries from the Arctic to Antarctica to uncover the private lives of these conquerors of the air. Episodes: To Fly or Not To Fly When the dinosaurs disappeared, some birds abandoned flight and made a bid to take over the earth. And some are still doing so today. The Mastery of Flight Speed, endurance, and unrivalled agility are the hallmarks of the aces of the skies. The Insatiable Appetite A diversity of bill shapes and sizes have evolved to cope with all the most difficult-to-find foods, but some birds still need tools. Meat Eaters Both hunters and scavengers need incredible strategies and skills to compete for their elusive prey. Fishing for a Living The earth's vast areas of fresh and salt water provide dinner for millions of birds. Signals and Songs Communication makes everything possible. Finding Partners Extraordinary displays and bizarre mating rituals. The Demands of the Egg The drive to reproduce is fraught with danger. The Problems of Parenthood Bringing up a baby is a full-time job that requires some ver special skills. The Limits of Endurance Changes and disasters wrought by both nature and man can create new challenges.