 
  Gavia
拉丁名: Gavia
 Gavia 
  拉丁名: Gavia 
  Photo By Steve Garvie , used under CC-BY-SA-2.0 /Cropped and compressed from original
  Photo By Steve Garvie , used under CC-BY-SA-2.0 /Cropped and compressed from original   
 Scientific Classification
 
  
  
  
   Photo By Steve Garvie , used under CC-BY-SA-2.0 /Cropped and compressed from original
  Photo By Steve Garvie , used under CC-BY-SA-2.0 /Cropped and compressed from original   
  
  
  
  
  