Audubon-Ency N.A.Birds

I have had this book since the 1980 edition. It is a very comprehensive work with beautiful pictures. You need to know which family a bird is in to look it up. In other words to read about an American Robin you look under thrushes. In the descriptions of each bird, it goes into depth describing characteristics, feeding habits, nest, eggs, incubation, other names, albinism and range. It defines all terms related to birds. All are alphabetically listed. I have rated it a 4 instead of a 5 because of my edition's binding. The glue does not hold up well and sections of the book have separated from the binding. This happened quite soon after I bought my first copy and I had it replaced. The same happened to the replacement. I still recommend book this as it's material is so worth while. Just handle it with care.