14. No person may, in a heronry, carry on an activity mentioned in section 12, except in compliance with the following requirements:(1) the activity may be carried on only in the area outside the first 200 m surrounding the site where the nests are found and then only during the period from 1 August to 31 March; and
(2) trenches and other excavations shall be filled and the organic matter shall be spread over them when the activity is completed.