The undisturbed natural environment of the Tsengwen estuary, and the abundant tilapia and crucian carp of Chiku's vast fish farms, provide the spoonbills with a suitable overwintering habitat.
曾文溪口自然不吵雜的棲息環境，以及廣大的七股漁塭中俗稱下雜魚的吳郭魚、鯽魚，提供了黑面琵鷺食宿無虞的渡冬環境。