Your login:

Password:

Stay signed in

Enter your login name or your email address and click on Send reminder to receive a reminder by email.


Welcome Guest

Razorbill

Alca torda Linnaeus, 1758

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.)
* Alca torda Alca torda
Razor-billed Auk
Alca torda
Razor-billed Auk
Alca torda
Razor-billed Auk
Alca torda
Razor-billed Auk
Alca torda
Razorbill
Alca torda
Razorbill
Alca torda
Razorbill
Alca torda
Razorbill
Alca torda torda  
 
 
 
 
 
 
 
Alca torda torda
 
 
 
 
 
 
 
Alca torda torda (torda)  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
[Alca torda torda (pica)]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Alca torda islandica  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Alca torda islandica (islandica)  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
[Alca torda islandica (britannica)]  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Avibase has been visited 280,205,146 times since 24 June 2003. © Denis Lepage | Privacy policy