A really good book for those more interested in birds and wanting to learn more than the basics. It is a textbook and has questions to take along the way if wanted.
This is a college course book, or at least reads like one. Will introduce you to the fundamentals of bird physiology, not necessarily behavior. Read this as an introductory book if you want to have a THOROUGH UNDERSTANDING of birds, not just become Joe Bird-Watcher.
EXCELLENT resource to learn basic avian and more advanced ornithology and biology. The illustrations, charts, and lists support and enhance the written information. I have read through the entire book and refer to it nearly every day to assist me in my work. Pages are starting to fall out due to my constant use of this book!