Whooper swan

Whooper swan

Observation - Whooper swan - UK and Ireland. Description: I think this is Bewick's - whooper seems to have more 'roman nose' beak, but would appreciate opinion more expert than mine:-) Is this also known as the tundra swan, as the iSpot system changed the common name to this and also suggested a different scien

I think this is Bewick's - whooper seems to have more 'roman nose' beak, but would appreciate opinion more expert than mine:-)
Is this also known as the tundra swan, as the iSpot system changed the common name to this and also suggested a different scientific name (Cygnus columbianus) to that which I expected?