Living Planet: Raptors illegally hunted in Scotland, protecting vultures and cranes in Kenya, Spain's trash-gobbling storks

Whether you consider yourself a birder or find the avian kind tend rather to ruffle your feathers, there's no denying birds are a critical part of the natural world. But in too many cases, birds are under threat. We visit the moors of Scotland, where eagles get illegally killed; and Kenya, where vultures and the African crane are in decline. Plus: Storks in Spain addicted to junk food.