Cygnus bewickii Yarrell, 1830 ― Synonym of Cygnus columbianus bewickiiMentioned in the following international legal instruments and agreements:
- Annex II: strictly protected fauna species
- Annex I: Species that shall be the subject of special conservation measures concerning their habitat in order to ensure their survival and reproduction in their area of distribution. Member States shall classify territories as special protection areas for the conservation of these species.
- Revised Annex I of Resolution 6 (1998) of the Bern Convention listing the species requiring specific habitat conservation measures (year of revision 2011)
Natura 2000 code: A037All the information associated to this invalid name can be found on the page of the species or subspecies with the valid name.