• English Name (with species endemic to a particular country followed by @)
• Scientific Name
• French Name
• German Name
• Spanish Name
• English Synonyms
• Peters Family Name
• Sibley & Monroe Family Name
• Gill (2nd edn) Family Name, as used by Clements
• Habitat
• Distribution
• Threat Status (for birds lists in the IUCN's Red Data Book)
• Criteria for Threat Status
• Annotated synonymy for every Generic, Subgeneric, Species and Subspecies Name

For help on to to search for birds, click on Birds Search.  At the bottom of the screen is extensive help on how to use Birds Search.