Field identification guides to suit every naturalist Waterproof and transportable for use in the field More than 400,000 Mac's Guides sold! Tape them onto the deck of your kayak! Slip them into your pack! Keep them handy for backyard use! No matter the weather or terrain, Mac's Field Guides are the perfect wildlife identification tool for the amateur naturalist, covering a wide variety of subjects and regions in North America. Created by Craig MacGowan, a teacher of marine science, these two-sided, laminated cards contain detailed, full-color drawings of flora and fauna as well as information on size and habitat or region.