The most comprehensive and detailed field guide. David Sibley's illustrations show plumage variations, flight patterns, and behavioral differences. Heavy for field use but excellent reference.
Classic guide using Peterson's identification system with arrows pointing to key field marks. Separate Eastern and Western editions. Lighter weight, great for beginners.
Beautiful illustrations, comprehensive coverage, includes vagrants and rarities. Good middle ground between Sibley and Peterson for completeness and portability.
Revolutionary photo-based guide showing birds in context. Multiple photos of each species in typical habitats. Helps with GISS (General Impression Size and Shape).