Sibley Backyard Birding Flashcards, Revised and Updated 100 Common Birds of Eastern and Western North America is an essential tool for bird enthusiasts of all levels. These flashcards feature 100 common birds found in the Eastern and Western regions of North America, making it easy to identify and learn about the birds in your backyard. The flashcards are organized by region and include detailed illustrations by renowned bird artist David Sibley. This revised and updated edition includes new species and updated information, making it the perfect resource for both beginners and experienced birders. Whether you're a casual bird watcher or a serious birder, Sibley Backyard Birding Flashcards are a must-have addition to your collection.