You can select up to 8 checklists to perform a comparison of taxonomic authorities for this taxon and related concepts:

You can also use one of the pre-defined group of taxonomic authorities below:

• American Ornithologists' Union - versions 1 to 7
• Birdlife- versions 1 to 9
• Clements - versions 1 to 6
• Howard & Moore- versions 1 to 4
• International Ornithological Committee (IOC)- versions 1 to 7
• Recent authorities - most recent version of the major world authorities