French: Cormoran vigua German: Olivenscharbe Spanish: Cormorán biguá
J. F. Gmelin
Subspecies and Distribution
N. b. mexicanus
(J. F. Brandt, 1837) – S USA (S Arizona to Louisiana) S to Panama, also Bahamas and Cuba; populations above 27° N disperse towards S.
N. b. brasilianus
(J. F. Gmelin, 1789) – Panama and S throughout most of South America to Cape Horn.
58–73 cm; 606–1814 g; wingspan 101 cm. Breeding adult has head, neck and most of body black with bluish or purplish sheen except line of white feathers... read more
Utters low grunts and croaking sounds, similar to those made by a pig (Sus). Generally... read more
Wide variety of wetlands, in fresh, brackish or salt water. Sheltered parts of coast, including... read more
Food and feeding
Small fish, crustaceans, frogs, tadpoles and aquatic insects. In Argentina, takes large amounts of fish, especially Aristromenidia... read more
Breeds in all months of year, peak varying locally, sometimes coinciding with wettest months; May–Aug in USA. Colonial, sometimes in... read more
Sedentary throughout most of breeding range, with some post-breeding dispersal. High-altitude... read more
Status and conservation
Not globally threatened (Least Concern). Widespread and numerous. In high Andes, rare in N but becoming commoner from Peru S to NW Argentina; in Ecuador, census data from... read more
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