Feeding wild birds in gardens and backyards is one of the most popular forms of interaction between humans and wild animals. Yet despite the enormous scale of this activity and the millions of people involved throughout the world, remarkably little is known about the practice or the potential implications associated with the provisioning of vast amounts of food, all of which is additional to the bird’s natural diet. Many questions arise: Does bird feeding change wildlife communities? Does it aid the spread of disease? Is it essential for the conservation of many struggling species, especially in urban areas? And why are so many people passionately engaged, and willing to spend considerable sums on this practice? This is the first book to attempt to address these and many other questions associated with this global activity, exploring many complex issues through both science and the personal experience of bird feeders themselves.