Matsu is the only place in the whole of the Taiwan Area where the black-tailed gull breeds, and is at the northernmost limit of the greater crested tern's breeding range. The roseate tern is listed internationally as a critically endangered species.
其中黑尾鷗為全國唯一繁殖地；紅燕鷗已被國際列為受嚴重威脅的保育鳥類；在馬祖繁殖的鳳頭燕鷗則是世界分布的最北限。