Whooper Swan (Cygnus cygnus) Danube Delta

The whooper swan (Cygnus Cygnus) is a species which nests in Scandinavia, Northern Russia and even the arctic area. It is a large scaled bird. Due to the cold wave it comes to Romania at the end of October, but most specimens come in December. This bird has a slim allure, with a bright white plumage and a bicolored bill: yellow with a black base. Youngsters are grey and they have a pink-yellowish bill... see more - https://www.videoguide.ro/en/whooper-swan-cygnus-cygnus-danube-delta.html