Surpassing 900 pages as it does in order to contain the “more than 800 species” of birds presented in its species profiles, “Birds of North America” is a much weightier tome than its series sibling, “Trees of North America.” Not surprisingly, it is not by any means a field guide but rather a reference guide – a role it can be expected to play reasonably well for general readers who would like an attractive, extensively illustrated reference guide around the house.