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A photo of a Little Black Cormorant (Phalacrocorax sulcirostris)
Little Black Cormorant

Little Black Cormorant

Phalacrocorax sulcirostris

The Little Black Cormorant, Phalacrocorax sulcirostris, is a sleek, all-black seabird with a slender profile. It measures approximately 60 to 65 centimeters in length and is distinguished by its blue-green eyes. During the breeding season, it may adorn itself with white feathers around the head and neck, and a whitish eyebrow becomes visible. Outside of this period, the plumage fades to a more brownish hue.

Identification Tips

To identify the Little Black Cormorant, look for its entirely black plumage with a greenish sheen on the back. Both males and females share the same plumage. The bird's long, slender bill is grey, while its legs and feet are black. Adult birds have green irises, whereas juveniles have brown irises. Immature birds can be recognized by their brown and black plumage.

Habitat

This species is predominantly freshwater-oriented, inhabiting inland bodies of water and occasionally venturing into sheltered coastal areas. It is almost invariably found in or near water, making rivers, lakes, and wetlands its preferred environments.

Distribution

The Little Black Cormorant's range extends from the Malay Peninsula through parts of Indonesia (excluding Sumatra), New Guinea (including the D'Entrecasteaux Islands), and across Australia. It is also present in New Zealand's North Island.

Behaviour

The Little Black Cormorant is known for its sociable nature, often found in large flocks. These groups may exhibit coordinated flight in V formations, showcasing their gregarious tendencies.

Food and Feeding

A piscivore at heart, the Little Black Cormorant's diet consists mainly of fish. It has a particular appetite for common carp, which can constitute over half of its food intake. The species employs a unique feeding strategy, where flocks work in unison, diving and surfacing in a synchronized manner to catch fish.

Breeding

Breeding occurs annually, with timing varying by region—spring or autumn in southern Australia and around the monsoon in tropical areas. Nests are constructed as small platforms of dried branches and sticks, often situated in trees standing in water and in proximity to other waterbirds. The clutch typically consists of three to five pale blue, lime-coated eggs, which become stained over the breeding season.

Conservation Status

The Little Black Cormorant is currently listed as Least Concern by the IUCN, indicating a stable population without significant immediate threats to its survival.

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