Egretta garzetta dimorpha

Egretta garzetta dimorpha, the dimorphic egret, is an extinct or near-extinct subspecies of little egret (Ardeidae) formerly breeding on the Mascarene Islands, including Mauritius. A piscivore, it hunted fish, crustaceans, and frogs in coastal lagoons and freshwater marshes. Subfossil material documents its Holocene presence across the western Indian Ocean islands. Its population decline is attributed to persecution, habitat alteration, and introduced predators following European colonisation.