Cygnus bewickii Yarrell, 1830 ― Synonym of Cygnus columbianus bewickii
Mentioned in the following international legal instruments and agreements:-
EC Birds Directive
- Council Directive 79/409/EEC of 2 april 1979 on the conservation of wild birds - consolidated version 01/05/2004 - Annex I
- 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)