The competent authority may grant derogations from the measures provided for in Article 18 , points ( b ) and ( c ) , Article 22 , and in Article 30 , points ( b ) , ( c ) and ( f ) , in cases of an outbreak of HPAI in a non - commercial holding , a circus , a zoo , a wild life park , a fenced area where poultry or other captive birds are kept for scientific purposes or purposes related to the conservation of endangered species or officially registered rare breeds of poultry or other captive birds .