found: Work cat.: Rasmussen, P.C. Imperial shags and other birds of the Lago Géneral Vintter area, Chubut Province, Argentina, 1992:p. 5 (Phalacrocorax atriceps, Imperial Shag)
found: ITIS, Aug. 31, 2006(Phalacrocorax atriceps King, 1828 - valid)
found: Annotated list of the seabirds of the world, via WWW, Aug. 31, 2006(Phalacrocorax atriceps, Imperial Shag)
found: Avibase : the world bird database, via WWW, Aug. 31, 2006(Imperial Shag (Phalacrocorax atriceps). English synonyms: Blue-eyed Cormorant, Blue-eyed Shag, Emperor Shag, Imperial Cormorant, King Cormorant, King Shag, South American blue-eyed cormorant. Latin synonyms: Leucocarbo atriceps, Notocarbo atriceps, Phalacrocorax albiventer; King Shag (Phalacrocorax albiventer) listed as a separate full species)
found: Internet bird collection, Aug. 31, 2006(Phalacrocorax atriceps, Imperial Shag)
found: A classification of the bird species of South America, via WWW, Aug. 31, 2006(Phalacrocorax atriceps, Imperial Cormorant)
notfound: NatureServe explorer, via WWW, Aug. 31, 2006;The NCBI taxonomy homepage, Aug. 31, 2006
