"Expanding the Known Ranges of Mexican Bats" is a study by author Sidney Anderson devoted to a detailed study of the ranges of various bat species in Mexico. The book describes in detail the life of these animals, their ecology and habits, and also studies the impact of human activity on their numbers and habitats. Thanks to the large volume of data and the scientific approach of the author, the book is an important addition to the study of Mexican fauna, helping to expand our knowledge of these interesting mammals.