Tundra Swans Rousting In The River In Blackwater National Wildlife Refuge. Tundra Swans Are Taking A Break In The Marshland During Their Migration In Blackwater Nwr.

KEYWORDS

bird wildlife waterbird animal wetland ducks winter waterfowl nature water snow marsh goose reflection mallard tundra beak shorebird little blackwater river tea-colored waters peat soil marshes wetlands forests species reptiles amphibians threatened endangered plants mammals meadows fields migration swans rousting national refuge black nwr marshland bill fly egg tail flock flight feather feathers wing aviary incubate nest nestling migrate rook roost rookery low-lying land flooded wet tide waterlogged coastline coast grass soft grasses bog fen marshland mire park backwoods nwr