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Thayer's Gull
Larus thayeri Brooks, WS, 1915
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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. 57th suppl.)
Larus [glaucoides or thayeri]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
* Larus glaucoides  
 
 
 
 
 
Larus leucopterus
Iceland Gull
Larus glaucoides
Iceland Gull
Larus glaucoides
Iceland Gull
Larus glaucoides
Iceland Gull
Larus glaucoides
Iceland Gull
Larus glaucoides glaucoides Larus leucopterus
Iceland Gull
Larus leucopterus
Iceland Gull
Larus leucopterus
Iceland Gull
 
 
Larus glaucoides glaucoides
 
 
 
 
 
 
 
Larus glaucoides kumlieni Larus kumlieni
Kumlien's Gull
Larus kumlieni
Kumlien's Gull
Larus kumlieni
Kumlien's Gull
 
 
Larus glaucoides kumlieni
 
 
 
 
 
 
 
* Larus thayeri  
 
 
 
 
 
Larus argentatus thayeri
 
Larus argentatus thayeri
 
Larus thayeri
Thayer's Gull
Larus thayeri
Thayer's Gull
Larus thayeri
Thayer's Gull
Larus [argentatus (sensu lato) or glaucoides]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus [argentatus, cachinnans, vegae, fuscus or heuglini]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus [argentatus, cachinnans or vegae]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus [argentatus, smithsonianus or vegae]  
 
 
 
 
 
 
 
 
 
Larus argentatus
Herring Gull
Larus argentatus
Herring Gull
Larus argentatus
Herring Gull
Larus [argentatus or smithsonianus] Larus argentatus
Herring Gull
Larus argentatus
Herring Gull
Larus argentatus
Herring Gull
 
 
 
 
 
 
 
 
 
 
* Larus argentatus  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus argentatus argentatus Larus argentatus argentatus
 
Larus argentatus argentatus
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus argentatus argentatus (argentatus)  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
[Larus argentatus argentatus (omissus)]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus argentatus argenteus  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
* Larus smithsonianus Larus argentatus smithsonianus
 
Larus argentatus smithsonianus
 
 
 
Larus argentatus smithsonianus
 
Larus argentatus smithsonianus
 
 
 
 
 
 
 
Larus [argentatus, cachinnans, michaellis, heuglini, vegae, mongolicus, thayeri]  
 
 
 
 
 
Larus argentatus
Herring Gull
Larus argentatus
Herring Gull
 
 
 
 
 
 
Larus [argentatus, cachinnans, michaellis, heuglini, vegae, mongolicus]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus argentatus [incl. heuglini, vegae]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus argentatus [incl. vegae]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus smithsonianus [incl. vegae and mongolicus]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus [cachinnans, michahellis or armenicus, incl. mongolicus]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus [cachinnans or michahellis, incl. mongolicus] Larus cachinnans
Pallas's Gull
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus [cachinnans, barabensis or mongolicus]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus [cachinnans, michahellis, barabensis or armenicus]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus [cachinnans, michahellis or barabensis]  
 
 
 
 
 
 
 
 
 
 
 
Larus cachinnans
Yellow-legged Gull
 
 
Larus [cachinnans or barabensis]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
* Larus cachinnans  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus cachinnans (cachinnans)  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
[Larus cachinnans (ponticus)]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
* Larus barabensis  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
* Larus michahellis  
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus michahellis
Yellow-legged Gull
Larus michahellis michahellis  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus michahellis michahellis (michahellis)  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
[Larus michahellis michahellis (lusitanius)]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus michahellis atlantis  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus [cachinnans, michahellis or armenicus, excl. barabensis]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus [michahellis or armenicus]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus [cachinnans or michahellis, excl. barabensis]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
* Larus armenicus  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus [fuscus or heuglini, incl. barabensis]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus [fuscus or heuglini]  
 
 
 
 
 
Larus fuscus
Lesser Black-backed Gull
 
 
Larus fuscus
Lesser Black-backed Gull
Larus fuscus
Lesser Black-backed Gull
Larus fuscus
Lesser Black-backed Gull
* Larus fuscus  
 
 
 
 
 
 
 
Larus fuscus
Lesser Black-backed Gull
 
 
 
 
 
 
Larus fuscus [fuscus or intermedius]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus fuscus fuscus  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus fuscus intermedius  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus fuscus graellsii  
 
 
 
 
 
Larus fuscus graellsi
 
Larus fuscus graellsii
 
 
 
 
 
 
 
* Larus heuglini Larus affinis
Siberian Gull
Larus affinis
Siberian Gull
Larus affinis
Siberian Gull
 
 
 
 
 
 
 
 
 
 
Larus heuglini heuglini  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus heuglini heuglini (heuglini)  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
[Larus heuglini heuglini (antelius)]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus heuglini taimyrensis  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
* Larus vegae  
 
 
 
 
 
Larus argentatus vegae
 
Larus argentatus vegae
 
 
 
 
 
 
 
Larus vegae vegae  
 
Larus vegae
Vega Gull
Larus vegae
Vega Gull
 
 
 
 
 
 
 
 
 
 
Larus vegae vegae (vegae)  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
[Larus vegae vegae (birulae)]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Larus vegae mongolicus  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

         

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