The book is designed for an extensive circle of readers, because people of various ages and professions are interested in keeping birds, for whom observing and caring for their pets is the best rest. Many people are engaged in this business and want to do it, but not everyone knows how to keep the bird they like healthy and cheerful. They often consider it impossible to keep nightingales, warblers or foams in cages, they think that if these birds survive in captivity, they will no longer sing.