The book "Quantitative Study of Nocturnal Bird Migration" by author George Lowery, Jr. is an important scientific document that reveals the secrets of the nocturnal migration routes of birds. In this work, the author focuses on the quantitative aspects of birds that carry out their migration at night, which makes this book a valuable source of information for scientists and researchers in the field of ornithology. Through precise measurements and research, the author reveals the complex relationships between birds, their environment, and migration routes. The book provides an opportunity to better understand the nocturnal activity of birds and makes a significant contribution to our knowledge of the biology of these incomparable creatures of the sky.