A Duck

but what kind of a duck? I don´t know. Can be a young one because the time of the year. If someone can help me I´m pleased. The picture was taken at the sea coast near Helsinki.

Dark, cloudy and rainy day, that´s why quite big ISO value, but head is clear enough to make me wondering what duck this is. I looked through my books and over the internet but didn´t get an answer.