Water Rail
Rallus aquaticus

Water Rails are usually very shy birds that rarely come out of reed beds and into the open. However, if the water freezes up where they are, then they can become very bold and move about in the open. Even when hidden, thay can often be identified by their pig-like squeals.
 

Water Rail  Water Rail

Water Rail  Water Rail

1-3: Radipole Lake RSPB, 26/01/2006.
4: Fleet Pond, 08/02/2006.