Recently read this book about John James Audubon and recommend it. It is only 90 pages (with illustrations from 'Birds of America') and a quick read but it is well written. It is a fascinating look at what the country was like before much of the country was settled. It is extraordinary that animals like the passenger pigeon once existed by the billions and are now extinct and many others are now near extinction in just the span of a couple hundred years. Makes you think also what changes will come in the next couple hundred years.