What a beautiful classic about these marvelous butterflies. The book was purchased for grandchildren in the 6-8 year range although it would be suitable for much younger and older readers too. The visuals are delightful. The clear organization allows the reader to follow the butterfly through its life easily. Also included are guides to raising your own butterflies. Since this beautiful book was published, new research has expanded our understanding, especially of their migrations. The book is too lovely not to check out, just remember to update with a more recent source.