The whooper swan is one of the heaviest flying birds in the world. They are very similar to the slightly smaller Bewick's swan, and can be identified by the larger head and bill, and the yellow that extends into the bill (not just at the base like in the Bewick's). Similar to the North American trumpeter swan, they are closely related. Western Iceland is the only place in the world where these swans are residents, i.e. can be seen all year round.
Prefer wetland and lake areas, breed in sub-Arctic Eurasia and migrate further south in the winter.
This pair of whooper swans lives on Tjornin lake in the middle of Reykjavik