They are found across the eastern two-thirds of North America.  They travel from their breeding grounds as far away as Canada during the summer.  In winter they are found again in their native places ie America and Mexico.  A swamp forest is a forest that has water and damp areas.  Sylhet division has such swamp forest.  Swamp sparrows live in damp places and hide behind bushes and trees. However, they have longer legs than other sparrows.  Like Swamp Forest, Sundarbans is the mangrove forest of the world.