bewick`s swan - cygnus columbianus bewickii` portrait.

1900s 1990s arctic avian beads beak bewickii bewicks bill bird birds breed breeds britain columbianus cygnus england europe fauna feather feathers germany graceful handsome head migration migratory netherlands ornithology population portrait resting siberia species sub subarctic swan swans tundra visitor water waterfowl western white wildlife winter winters yellow