"Hyd yn oed os yw’r adar dan do, mae’r perygl o gael eu heintio’n un byw a dylai ceidwaid dofednod ac adar caeth eraill ofalu eu bod yn gwneud popeth posibl i rwystro’u hadar rhag dod i gysylltiad ag adar gwyllt."
“Even when birds are housed, there remains a risk of infection and keepers of poultry and other captive birds should ensure that every effort is made to prevent contact with wild birds.”