National Audubon Society

"From the most trusted name in birding--beloved by millions, backyard enthusiast and expert alike--comes a completely new and definitive guide to the birds of North America: the most comprehensive, authoritative, and up-to-date work of its kind. Developed by the creators of the bestselling Audubon field guides, this master guide is the result of a collaboration between leading scientists, scholars, taxonomic and field experts, photo editors, and designers....

Birders know you need the right house to attract the right bird. An entrance hole that's 1/8 inch too big or too small spell trouble, as does a roof that leaks or a floor that doesn't drain. Learn to build safe, species-appropriate houses for your favorite birds.

Provides information about mollusks and their shells and how to identify them, along with detailed descriptions and photographs of fifty common North American shells.