|Handbook of Nature Study||
My basic go-to nature study resource (primarily for teacher reference).
|Keeping a Nature Journal: Discover a Whole New Way of Seeing the World Around You||
Highly recommended by many. Lovely examples of what a nature journal *could* look like. May be overwhelming for the non-artsy or for a beginner...
|James Herriot's Treasury for Children: Warm and Joyful Tales by the Author of All Creatures Great and Small||
Books like this one with stories about animals often inspire children to form relationships of their own with living things.
|The Boy Who Drew Birds: A Story of John James Audubon (Outstanding Science Trade Books for Students K-12)||
This biography is geared toward younger children with its lovely illustrations.
|John James Audubon||
Read biographies of naturalists (famous lovers of nature). Many like this one, may be most appropriate for teacher inspiration and education.
|Last Child in the Woods: Saving Our Children From Nature-Deficit Disorder||
This book has a lot of important statistics and such on the importance of time spent outdoors, but may be kind of a heavy read for beginners.
|Girls Who Looked Under Rocks: The Lives of Six Pioneering Naturalists||
Here's a free bio, both the author and subject were great naturalists.