Egyptian Goose

The Egyptian goose (Alopochen aegyptiaca) is a large, distinctive African waterfowl species, about 63–73 cm long and weighing roughly 1.5–2.3 kg. Both sexes have a pale head with a conspicuous dark eye patch, a brownish breast patch and a mainly grey-brown body. Large white wing panels become especially obvious in flight, contrasting with dark flight feathers and iridescent green secondaries.

Males and females look similar, although males average slightly larger and the sexes have different voices. Despite the English name, the species belongs to the shelduck group and is more closely related to shelducks than to true geese.

Egyptian geese use open and semi-open landscapes near freshwater, including lakes, rivers, reservoirs, wetlands, floodplains, grassland, farmland, golf courses and urban parks. The species ranges from lowlands to high mountain areas and has been recorded up to about 4,000 m in the Ethiopian Highlands.

They are not restricted to the water's edge and regularly use surrounding lawns, pasture and other short vegetation. A combination of open feeding ground, nearby freshwater and secure resting or nesting sites suits the species particularly well.

The diet is mainly plant material, especially grasses, leaves, shoots, seeds and agricultural crops. Small invertebrates and other animal food are taken in smaller amounts.

Chicks consume a higher proportion of aquatic invertebrates early in life before the diet becomes increasingly plant-based as they grow.

Egyptian geese forage mainly by grazing and pecking on land, especially in short grass, pasture, lawns and farmland. They also feed on mudflats and in shallow water, where they can pick or dabble for food without the sustained diving used by many other waterfowl.

A field study published in 2021 at Boyo wetland in Ethiopia found that grassland was the main feeding habitat in both wet and dry seasons, with foraging activity highest in the early morning and late afternoon. This flexible use of both terrestrial and wetland feeding sites helps the species thrive in natural as well as human-modified landscapes.

Egyptian geese are diurnal and are often seen as pairs or family groups, while larger gatherings can form at good feeding or resting sites outside the breeding period.

Pairs become strongly territorial around nesting areas and use loud calls, threat postures and chases against intruders. An urban study published in 2021 in southern Germany found aggression to be directed especially toward other Egyptian geese, while aggression toward other bird species was not unusually frequent. Only 2.4% of recorded aggressive encounters ended in a physical fight.

Breeding can occur in many months of the year depending on local conditions. Egyptian geese use an unusually wide variety of nest sites, including ground sites, islands, tree cavities, ledges, buildings and abandoned nests of other large birds.

Clutches usually contain five to eleven eggs, although clutches from one to 22 eggs have been recorded. The female incubates for about 28–30 days while the male remains nearby and helps defend the territory. The chicks leave the nest soon after hatching and feed for themselves, but both parents guard and lead the brood. They become capable of flight after about 55–75 days.

Egyptian geese have been kept as ornamental birds in Europe for centuries, and escaped or released birds have established breeding populations. Britain now has a large and rapidly expanding naturalised population, particularly in East Anglia and around Greater London. Between 1995 and 2024, the UK breeding population increased by 1,964%.

The species is also established in several continental European countries and remains on the European Union list of invasive alien species of Union concern. Concerns include continued spread, possible competition with native birds and crop damage. The scale of ecological and economic effects varies among regions.

Across its native African range, the Egyptian goose is classified as least concern on the IUCN Red List. It remains widespread and abundant in many natural and human-modified landscapes.

The global population trend appears to be declining, but the total population remains very large and the range extremely wide. Local conflict can occur where large numbers graze crops or congregate around managed water bodies. Despite the decline, the species is not considered globally threatened.