Circus aeruginosus (Linnaeus, 1758).

Length 55 cm. The largest harrier of the region; the male is generally brown above with grey wings and tail; underparts are streaked; plumage becomes progressively paler with age. The female is larger than the male; overall dark brown with yellowish-cream crown, throat, and forewing. The Marsh Harrier spends the winter in extensive reed beds of fresh or brackish water, marshes, swamps, and lagoons. It feeds on small or medium-sized birds and mammals, especially rodents. It attempts to surprise its prey by diving on it, on the ground or in water. This bird is a common passage migrant and winter visitor to Egypt, where it is found in the Nile Valley and Delta and in mangroves along the Red Sea.