The book "Report on the migration of birds in the spring and autumn of 1887. Ninth report (Vol. II, No. 4)" is the result of the joint work of eminent naturalists - Harvey-Brown J. A. (John Alexander), Barrington Richard Munliffe, Clark William Eagle, John Cordeau, and More, Alexander Goodman. In this book, the authors describe in detail the migration of birds in 1887, paying attention to their routes, customs and behavioral characteristics. They offer readers not only scientific data, but also interesting observations made during research. This book will be a useful source of information for all those interested in nature and birds, as well as for scholars and students studying ethology and ornithology.