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.
Many of the N.A.S. books look like this. A book that can fit in a large pocket, or in a backpack easily, and has a leather (or faux leather) cover. They always have color images with real pictures not drawing. I used to use them for animal identification when I was in high school.
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.