They are 67-72 inches long and weigh between 4.5 and 5 kgs. Their head and back is black while their neck and front is white. They are characterized by a white line that goes from the neck area behind the ear and the eye to the front without being over the peak. It has a black "U" on the chest with white edges. Its beak is flattened vertically with a pink basal area and surrounded by a pink eye. Their legs are a dark gray.
They dig galleries on islands off the coast or in rocky sections in the mainland coast from the middle to the north.
They feed on small sardines, anchovies and pejerretes along with crustaceans and squids.
Habitat: Rocky coastal waters area.