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fåglar

Long-tailed ducks (Clagula hyemalis), two males and one female.
   

fågel

The male Long-tailed duck use his long tail feathers for social signalling
   

fågel

Long-tailed ducks winters often far from the shore on for example offshore mussel banks. They may dive to a depth of 40 meters. Usually they dive to a depth of 10-25 meters during foraging.
   

fågel

 
   

fåglar i vatten

In late winter and spring flocks are more often seen close to land.
   

blåmusslor

Blue mussels between 5 and  25 mm in length are the main food for Long-tailed ducks during winter in the central Baltic Sea.  Maximal size of blue mussels in central baltic Sea is about 35 mm.
   

Musslor

Blue mussels on boulders. The energy content of blue mussels, and, hence, the value as food for seaducks, varies during winter and spring.
   

kaj

Oil damaged long-tailed ducks are often found sitting on land. After a short period they starve and freeze to death. Tens of thousands of long-tailed ducks are hit by illegal oil spills from ships every year.