Anser anser
The Greylag Goose, *Anser anser*, is a large and robust waterfowl species, recognized as the ancestor of most domestic geese. Adults typically measure 74-89 cm (29-35 in) in length, possess an impressive wingspan of 147-182 cm (58-72 in), and weigh between 2.5-4.1 kg (5.5-9.0 lb). Its plumage is predominantly grey, with a paler belly and a white rump, often appearing darker on the back and flanks with distinctive paler feather edgings. Key identification marks include its bright orange bill a...
Primarily inhabits a variety of wetland environments, including marshes, lakes, rivers, and coastal estuaries. It also readily utilizes adjacent grasslands, agricultural fields, and increasingly, urban parks and reservoirs at low to moderate elevations.
Primarily herbivorous, feeding on a wide range of grasses, leaves, seeds, roots, and aquatic vegetation. They also consume agricultural crops such as cereals, clover, and potatoes.
Greylag Geese are largely diurnal, spending their days foraging in open areas and returning to water bodies for safe roosting at night, often in large flocks. Their foraging strategy is predominantly grazing, employing a strong bill to pluck grasses and other vegetation, but they also dabble in s...
The Greylag Goose boasts an extensive range across the Palearctic. Its primary breeding grounds span Northern and Central Europe, including Iceland, Scotland, Scandinavia, and extending eastward through Russia, Kazakhstan, and into northern China. In Western Europe, populations have seen signific...
Least Concern
- The Greylag Goose is the wild ancestor of most domestic goose breeds in Europe and North America. - Konrad Lorenz, the Nobel Prize-winning ethologist, conducted his famous studies on imprinting with Greylag Geese. - They are one of the earliest known domesticated animals, with evidence suggesti...