The low Mondego river represents the last stage of this river. In this sector a number of important aquatic habitats harbor an interesting diversity of birds. Of these places, the Special Protection Area of Paul do Taipal, in Montemor-o-Velho, stands out. In this wetland we can find several species of ducks. Shoveler Duck (Anas clypeata), the Pintail (Anas acuta), the Mallard Duck (Anas platyrhynchos) and the Common Teal (Anas crecca). The Marsh Harrier (Circus aeruginosus), a species present throughout the year, constantly patrols the reeds in search of surprising an unsuspecting prey. Also here we can find the Glossy Ibis (Plegadis falcinellus).
Continuing the course towards the mouth, in Figueira, the Island of Murraceira, an area of estuary and salt pans, the diversity and quantity of waders is considerable. Here, large numbers of herons and wading birds congregate every winter, such as the Little Egret (Egretta garzetta), the Great Egret (Chasmerodius albus), the Grey Heron (Ardea cinerea), the Black-winged Stilt (Himantopus himantopus) and the Avocet (Recurvirostra avosetta). But the highlight goes to the beautiful flamingos (Phoenicopterus roseus), the peculiar spoonbills (Platalea leucorodia) and the unique Osprey (Pandion haliaetus).