Another feature of Chiku's rich natural environment not to be missed is the rare single-species forest of grey mangrove (Avicennia marina) in the mangrove conservation area at the mouth of the Chiku Creek. The forest is home to thousands of egrets and black-crowned night herons, which live here throughout the year.
七股鄉豐富的生態資源，當然少不了位於七股溪出海口的紅樹林保育區，保育區中擁有珍貴的海茄苳紅樹林純林，以及終年棲息的上萬隻白鷺鷥與俗稱暗光鳥的夜鷺。