There are many books by the National Audubon Society, most of which are identification books for anything and everything.
I have read, and own, at least a dozen books by the N.A.S. and all the books that I've read are very good at doing what they are intended for, identification. They do not have a ton of information about the items in mention, but they help you look up a plant, animal, rock, shell etc. and then know what you have and can start your search to learn more.
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I'd highly recommend these books to anyone who is interested in learning about animals, or being able to know what the animals are.
Good Day and Good Reading.