63. The site of a heronry and the innermost 200 m of the 500 m strip of land surrounding it shall be left intact.
Within the remaining 300 m, no person may carry out work involving the felling or harvesting of trees, the construction or improvement of roads, the opening and working of a sand pit, preparatory work for forest production purposes, the application of phytocides, pruning or forest drainage between 1 April and 31 July of each year.
Outside the period prescribed in the second paragraph, a road may be constructed or improved, but the roadway of such road may not be wider than 5.5 m.