Gulosus aristotelis
Easily distinguished from Cormorant in breeding plumage, but at other times easily confused with congeners. Smaller than Cormorant, with a more slender neck and rounded head. Bill slender and straight. Steep forehead with peaked front crown, differs from the wedge shaped head of Cormorant. Bill often with yellow tinge (never in Cormorant). Flies with quicker wing-beats and straight neck (Cormorant with bulge). Often dives with a high jump. Juveniles with darker underparts than Cormorant, and often an obvious brownish tinge. Rare in brackish water.
Very deep and harsh voice heard at breeding ground. Deep grunts alternated, or ended with clicking sounds.
Wikipedia: map (se also Xeno-canto below)
Birdlife ecology
Sounds:www.xeno-canto.org,Jens Kirkeby,http://creativecommons.org/licenses/by-nc-sa/4.0/
