The competent authority shall ensure that vaccinated mallard ducks on the holding referred to in Article 2(1) are:
marked individually;
not moved to other poultry holdings within Portugal; or
dispatched from Portugal.
After their reproductive period, such ducks shall be killed on the holding referred to in Article 2(1) of this Decision, in accordance with the requirements in Article 10(1) of Directive 93/119/EEC, and their carcases safely disposed of.