Each of these field guides includes exactly 100 entries, with one page per species presented in a consistent, easy-to-follow format. An opening paragraph describes the animal’s physical appearance, plus a bit about its environment and behavior. A “How to Spot” box lists size, range, habitat, diet. About half of the entries include an inset with a “fun fact” or additional information. One or two photographs per page usually provide clear visual details needed for identification; a few of the images are less effective. Captions identify songbird gender in many cases, especially when the visual differences are pronounced. Entries are arranged by category, such as “crocodilians” and “perch and darters.” Tracks and Scat uses broader groups, like “Mammals” and “Reptiles,” pairing a clear photo of the track or scat alongside the animal image. VERDICT Useful and well-organized field guides for older children…. Fill a need for broad species coverage at the middle school level.