The book "Comparative Ecology of the Pinyon Mouse and the Deer Mouse in Mesa Verde National Park, Colorado" by author Charles Douglas is a study of the ecological aspects of the lives of two mouse species native to the Mesa Verde region. The book describes in detail the features of the environment and interaction of these types of mice, their behavior, food preferences and adaptations to natural conditions. The author presents the results of observations made on the territory of the national park, which reveal important aspects of the relationship between these species and their impact on the ecosystem of the region. The book will be a useful source of information for ecologists, biologists and anyone interested in nature and the interaction of different species in their natural environment.