The Egyptian goose often grazes on land, feeding on a variety of plant matter including grasses, seeds, shoots, leaves, grain and crops. It also takes food items from shallow water, including algae and aquatic plants, and sometimes takes animal matter such as worms, locusts or winged termites (2) (5). In some areas, individuals undertake seasonal movements linked to water availability (2) (3) (5) and, after breeding, large flocks of Egyptian geese may gather during the annual moult (2) (6) (7).
The breeding season of this species varies with location (2) (5), but usually occurs in the spring or at the end of the dry season (5). In South Africa, breeding may occur at any time of year, but is mainly recorded from May to December with a July to October peak (11). The introduced population in the Netherlands breeds from February to August (8).
Pairs of Egyptian geese nest singly, typically building the nest out of reeds, leaves and grass, lined with down. The nest may be built among vegetation on the ground or near water, in a hole in an embankment or tree, on a cliff ledge or building, or even in the abandoned nest of another bird species (2) (5). Between 5 and 12 unmarked, white or creamy eggs are laid, hatching after 28 to 30 days. The female alone incubates the eggs, while the male guards the nesting territory (12). The chicks fledge at around 60 to 75 days, but do not reach sexual maturity until about two years old (2) (5). The Egyptian goose has lived up to 25 years in captivity (2).