The global pigeon

"The pigeon is the quintessential city bird. Domesticated thousands of years ago as a messenger and a source of food, its presence on our sidewalks is so common that people consider the bird a nuisance--if they notice it at all. Yet pigeons are also kept for pleasure, sport, and profit by people all over the world, from the "pigeon wars" waged by breeding enthusiasts in the skies over Brooklyn to the Million Dollar Pigeon Race held every year in South Africa." --Publisher description.