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Yellow-footed Gull
Larus livens Dwight, 1919
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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:

The table provided below compares authorities for this taxon and related concept. Names in red are those that differ from the name in the column located immediately to the left.
Species concept American Ornithologists' Union 1st edition (1886)American Ornithologists' Union 2nd edition (1895)American Ornithologists' Union 3rd edition (1910)American Ornithologists' Union 4th edition (1931)American Ornithologists' Union 5th edition (1957)American Ornithologists' Union 6th edition (1983)American Ornithologists' Union 7th edition (1998)American Ornithologists' Union 7th edition (incl. 59th suppl.)
Larus [occidentalis or livens] Larus occidentalis
Western Gull
Larus occidentalis
Western Gull
Larus occidentalis
Western Gull
Larus occidentalis
Western Gull
Larus occidentalis
Western Gull
 
 
 
 
 
 
* Larus occidentalis  
 
 
 
 
 
 
 
 
 
Larus occidentalis
Western Gull
Larus occidentalis
Western Gull
Larus occidentalis
Western Gull
Larus occidentalis occidentalis  
 
 
 
 
 
Larus occidentalis occidentalis
 
Larus occidentalis occidentalis
 
 
 
 
 
 
 
Larus occidentalis wymani  
 
 
 
 
 
Larus occidentalis wymani
 
Larus occidentalis wymani
 
 
 
 
 
 
 
* Larus livens  
 
 
 
 
 
Larus occidentalis livens
 
Larus occidentalis livens
 
Larus livens
Yellow-footed Gull
Larus livens
Yellow-footed Gull
Larus livens
Yellow-footed Gull

 

         

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