This practical field guide contains detailed annotations for easy identification of all of Mexico's regular species. The descriptions include the English, Spanish, and Latin names; a general range statement for each bird, along with its specific occurrences in the region, its typical habitat(s) and abundance; and its physical characteristics, including size and plumage. In addition, Edwards briefly describes the geographical regions of the four countries to help birders quickly narrow possible identifications based on ecological zones. He also lists accidental, casual, and very rare and local species and includes a list of books for further reading.