The little black cormorant (Phalacrocorax sulcirostris) is a member of the cormorant family of seabirds. It is common in smaller rivers and lakes throughout most areas of Australia and northern New Zealand, where it is known as the little black shag. It is around sixty centimetres long, and is all black with blue-green eyes.
The little black cormorant ranges from the Malay Peninsula through Indonesia (but excluding Sumatra) and New Guinea (including the D'Entrecasteaux Islands) and throughout Australia. It is found in New Zealand's North Island. It is a predominantly freshwater species, found in bodies of water inland and occasionally sheltered coastal areas. It is almost always encountered in or near water.
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More gregarious than other cormorants, the little black cormorant can be found in large flocks. Groups sometimes fly in V formations.
The little black cormorant feeds mainly on fish, and eats a higher proportion of fish than the frequently co-occurring little pied cormorant, which eats more decapods. A field study at two storage lakes, Lake Cargelligo and Lake Brewster, in south-western New South Wales found that the introduced common carp made up over half of its food intake.
