I know with the internet, and the digital age, printed matter is quickly becoming extinct; however, for those of us who actually like to hold a book or magazine in our hands to read, in your opinion, what are some of the best printed books on duck and goose hunting ? I'm talking about books that actually go into some depth to give a duck or goose hunter a better understanding of ducks and geese, and why they do what they do. Including such topics as habitat, breeding, behavior, flight patterns, preferred food sources, etc.... Which magazines do you feel offer the best coverage of duck and goose hunting ? Thanks for your input !