No person shall hunt, take, kill or attempt to kill any duck, goose, brant, swan or other waterfowl or shore bird or wader protected by law, resting on or flying over the waters of Lake Wononscopomuc, or kill or attempt to kill any such bird within a distance of five hundred feet from the water level of said lake, except that when in the opinion of the first selectman and the conservation commission, waterfowl have reached numbers that are considered a nuisance or threaten to affect adversely the quality of the water of said lake, the chief executive officer of the town of Salisbury, acting as the issuing agent of the Department of Energy and Environmental Protection, may issue permits to hunt such waterfowl. Any person violating this section shall be fined not more than two hundred fifty dollars. The commissioner or any agent of the department may, within the discretion of said commissioner, take and kill wild animals or birds in or above said waters which the commissioner determines to be destructive of any wildlife protected by the provisions of this chapter.