The long, egret-like neck, slender head and long, pointed bill should prevent confusion with cormorants. When swimming it sometimes totally submerges its body, leaving only its long neck and head showing.
Breeding male has a rufous head and neck, with a long, white stripe running from the eye onto the neck. Female and non-breeding male are pale brown on the face and throat. Juvenile and immature have a buffy neck, more streaking on the head and neck, and lack streaking on the back
Freshwater dams, lakes and slow-moving streams; less often coastal lagoons and estuaries.
A distinctive croaking.