I picked this guide up at costco this year & as my title says, it quickly has replaced all my other guides for accuracy, ease of use, it's size- slightly taller than 8.5 inches x 5 inches wide, which I love; it's beautiful (multiple) photos of each species, which include: an in flight shot; adult perching, or standing; male/female; immature,or juvenile; breeding; & seasonal. The maps of occurrence (so far) seem spot on and the additional information on each page very helpful in identifying each variety. Additionally, a section at the bottom of each page, is reserved for notes/where/date seen. Also included on each page are similar species. I have had no trouble with the layouts, or, the way the different species are located in the book; in fact, finding a particular bird seems a good deal easier than in alot of my other books. While I will always use my other guides (Sibleys, Peterson, Audubon...), this one has been a winner for me & has proven itself time after time in the field. I spend alot of time outdoors with my work, so this guide goes with me everywhere (work & birding trips) & seems to be holding up excellently.