
Order Anseriformes, Family Anatidae
Greylag Goose
Anser anser
A large, bulky grey goose with a massive orange bill, thick neck, and noisy, social demeanor.
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Plumage & appearance
Grey and white barred plumage with a pale grey forewing, dark bill (usually orange or pinkish-orange depending on the subspecies), and pinkish legs. Sexes are visually similar, though males are typically slightly larger.
Key field marks
Large grey body, bulky orange bill, pale grey forewing contrasting with darker flight feathers.
Size & weight
Length: 74-91 cm, Wingspan: 147-180 cm, Weight: 2.1-4.5 kg.
Voice — call & song
A loud, echoing honking call, very similar to the stereotypical domestic goose 'gaggle'.
Diet & foraging
Herbivorous; feeds on grasses, roots, shoots, grains, and agricultural crops.
Habitat
Wetlands, marshes, lakes, tundra, and adjacent agricultural fields and pastures.
Migration & movement
Partial migrant; northern populations migrate south for the winter, while western and central European populations are mostly resident.
Nesting & breeding
Nests on the ground in dense vegetation near water, laying 4-6 white eggs in early spring.
Similar species
Bean Goose and Greater White-fronted Goose, distinguished by bill color and lack of white facial blaze.
Ecological significance
Acts as a grazer that shapes wetland and grassland vegetation, and serves as prey for large predators.
Conservation status
Least Concern, with a stable or increasing population trend.
Observation tips
Easily observed near lakes, rivers, and agricultural fields; approach slowly to avoid flushing them.
Interesting facts
The Greylag Goose is the ancestor of most domestic goose breeds and was one of the first birds to be domesticated by humans.
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