Kaygorodov D.N. (1846-1924) - Russian forester, specialist in the field of forest technology, ornithology, teacher and popularizer of natural science, "father" of Russian phenology. He organized a phenological network: he attracted thousands of correspondents from different parts of Russia to observe seasonal natural phenomena. This edition contains a number of essays from the life of Russian birds among Russian nature. The book acquaints readers mainly with the feathered population of our Russian parks, fields and forests, they most often come across to a person. The author studied the bird world for more than a quarter of a century, a significant proportion of the material that served to compile this book were his own observations.