Enjoying Cardinals More. Contains fantastic information about one of the most popular North American backyard birds, the Northern Cardinal. Cardinals songs, sounds and behavior. Complete with beautiful full-color photographs throughout, this booklet appeals to cardinal admirers of all ages and bird-watching skill levels. Enjoying Cardinals More has all the information bird watchers need to attract cardinals to their yards and feeders. Each 32-page guide in the Backyard Booklet Series is packed with practical, easy-to-understand information, color photographs, and useful tips.