Ivory, A. 1999. "Gavia stellata" (Online), Animal Diversity Web. Accessed August 06, 2006 Gavia stellata (页面存档备份,存于互联网档案馆). Database entry includes justification for the ability to take off from land.
www.borealforest.org Gavia stellata (页面存档备份,存于互联网档案馆). Database entry includes justification for the ability to take off from land.