Developed in partnership with the Cornell Lab of Ornithology, this comprehensive set includes three portable references-The Basics, Dabbling & Diving Ducks, and Sea Ducks & Others. Over 75 species are beautifully illustrated in this three-pack of laminated 12-panel folding pocket guides, which are ideal for educators, learners, naturalists, and birders. A portion of the proceeds from sales supports ongoing educational activities by The Cornell Lab of Ornithology. Made in the USA.