Greylag goose

Greylag geese are a social bird, often found in large groups, especially during migration. It migrates in winter to warmer regions and returns to the Danube Delta in spring to nest. Summer geese prefer wet and marshy nesting sites, building their nests from grass and other plants. The female lays 4 to 8 eggs, which are incubated for about 28 days. The young are precocial, able to swim and feed soon after hatching.

Anser anser

Description and how to observe Greylag goose:

The Greylag goose, also known as the common goose, is a medium to large-sized bird, weighing between 3 and 4.5kg. The plumage is predominantly grey with lighter shades on the underside and a distinctive white throat. Summer geese also have an orange beak and legs of the same colour.

To observe these birds in the Danube Delta, visitors should head for freshwater areas, lakes or marshes, where they feed and gather in groups. The best times to watch are mornings and evenings, when the birds are most active.

What it feeds on Greylag goose:

Greylag geese are herbivorous, feeding mainly on grasses, leaves, seeds and other aquatic plants. These birds use their beaks to penetrate the soil to find roots or tubers. They may also eat grains, attracted to agricultural fields near their natural habitats.

Threats:

Threats to Greylag geese include habitat loss due to human activities such as construction and intensive agriculture. Water pollution and illegal hunting are also significant risks. Climate change also affects migration and breeding.

Ecological role:

Greylag geese play an important role in aquatic ecosystems, helping to control vegetation by feeding on aquatic plants and providing food for predators. They also contribute to soil fertilisation through their droppings, which helps maintain biodiversity in wetlands.

More information about Anser anser:

The Danube Delta is one of Europe's most important wetlands and a UNESCO World Heritage Site. It is a crucial habitat for many bird species, including the summer goose. Visitors can explore this biodiversity through eco-tourism tours, observing not only the geese, but also other bird and wildlife species living in this unique ecosystem.