The site contains a variety of wetland and drier habitats including riverine and coastal woodland, sand-dunes, lagoons, saltmarsh and freshwater marsh.
An important site for wintering and passage waterbirds. Species of global conservation concern that do not meet IBA criteria: Aythya nyroca, Larus audouinii (passage).
BirdLife International (2020) Important Bird Areas factsheet: Pineios delta. Downloaded from http://www.birdlife.org on 27/11/2020.