While a handful of geese and swans species live and breed in Scotland, the majority arrive in the country to spend the winter.
We may think it gets cold during this period but it's mild compared to the icy tundra of Siberia, Iceland, Greenland and Scandinavia, where they arrive in flocks from October onwards.
A trip to Scottish estuaries during this time can result in sightings of several different species, while there are a few you're likely to see during a walk in your local park.
Here are all 11 types and how to see them.
9. Tundra Bean Goose
Very small numbers of tundra bean goose can be seen in the UK during the winter, but it's difficult to tell where and when they'll turn up. They breed in the Russian tundra and winter at coastal locations in Europe but rarely make a stop in Scotland. | Canva/Getty Images
10. White-fronted Goose
Distinct flocks of two races of white-fronted goose arrive in coastal areas of Scotland during the winter - the first from Siberia and the second from Greenland. | Canva/Getty Images
11. Whooper Swan
Easily distinguished from the mute swan by its yellow - rather than orange - beak, the whooper swan breeds in very small numbers in Scotland. The majority that are seen in estuaries and wetlands are winter visitors, arriving in October and leaving in April. | Canva/Getty Images