The product is a set of four paperback books from the National Audubon Society Field Guides series. Each book covers a different topic related to nature and is authored by various experts in the field. The books are nonfiction and written in English, making them a valuable resource for those interested in exploring the natural world through Audubon's renowned guides. This lot of four books offers a comprehensive collection of nature information for enthusiasts and learners alike.

Guide to the night sky

Guide to North American mammals

Guide to North American reptiles and amphibians

Guide to North American mushrooms