| Citation | Lepage, D., 2007 Avibase -the World Bird Database. http://www.bsc-eoc.org/avibase/avibase.jsp [accessed 09/07/2007]. |
| ссылка | 7816 Lepage, D., 2007 |
| Page | |
| Named Used as Valid | Larus occidentalis |
| Местонахождение | |
| Distribution | Eastern Pacific and Western Atlantic. |