Greylag Goose

The Greylag Goose is the wild ancestor of the majority of domestic goose breeds and remains widespread and common across temperate Europe and Asia. It is a heavily built, uniformly gray-brown goose, distinguished from other gray geese chiefly by its stout, all-orange or pink bill and a pale gray panel across the front of the wing.

Body feathers are gray-brown broadly fringed with white or pale gray, producing a coarser, more barred appearance than the finer scaling of the White-fronted Goose. The most distinctive feather feature is the pale bluish-gray patch formed by the lesser and median upperwing coverts, visible both in flight and as a color block on individual shed feathers—darker geese like the Bean Goose lack this pale panel. The bill is notably heavy and thick-based. Legs are pink.

Sexes are alike, with males averaging slightly larger and heavier-billed. Juveniles are duller and less crisply patterned, lacking the well-defined pale fringing of adults. Molt occurs after breeding, with a flightless period while new flight feathers grow in.

Breeds across a broad swath of temperate Europe and Asia in wetlands, reedbeds, and lake margins, and winters somewhat further south on similar habitats as well as farmland. Feral and semi-domesticated populations, descended from or interbred with barnyard geese, are common in parks and urban wetlands well outside the natural range.

Grazes extensively on grasses, cereal crops, and waste grain, often in large flocks on farmland adjacent to water. Nests on the ground near wetlands, usually well hidden in vegetation. Gives loud, resonant honking calls similar to the familiar sound of domestic geese, reflecting its status as their direct wild ancestor.