"A Bird Calendar for Northern India" by Douglas Dewar is a comprehensive guide to the bird species found in northern India. The book is organized into twelve chapters, each devoted to a specific month of the year, and includes detailed descriptions of the birds that can be seen during that time. The book begins with an overview of the geography and climate of northern India, which provides the context for the bird species found there. Each chapter includes a list of the birds that are likely to be seen during that month, along with information on their behavior, habitat, and distribution. Dewar's writing is engaging and accessible, making the book suitable for both birdwatching enthusiasts and those with a general interest in natural history. He also provides numerous anecdotes and observations drawn from his own experiences, which add a personal touch to the text. Overall, "A Bird Calendar for Northern India" is a valuable resource for anyone interested in the birds of this region. It provides a detailed and informative account of the avian fauna of northern India, as well as practical advice for birdwatching in the area.