Studies of this species have shown that it can be as smart as dolphins and primates. COTU General Features: Measures approx 73 cm. It has a pouch in the throat yellow off. At the end of the sharp point at the back of the eye, has a bag. It has a glossy black color throughout the body. Despite spending much time in the water, do not have oil waterproofing and other sea birds so they must spend much time drying their wings. The tail is relatively long and its legs are black.
Habitat: They live along the banks of freshwater and saltwater lakes and rivers, coastal waters, these are sometimes in offshore islands and steep cliffs, and build their nests in dead trees that stand bare in water inaccessible cliffs. Food: They feed mostly on fish sometimes caught in a cooperative manner from side to side in large groups. Behavior: They are clumsy on land, and form large colonies in places that are safe from predators mammals. Often in flocks of 50 or more. Due to the speed of flapping and training in "V" taking the fly, can be mistaken for ducks. Flying, the tail appears short and pointed, the neck extended. Form Reproduction: They usually nest in trees, where a nest made basic with dry sticks and branches and little backing. The clutch is usually 3-4 eggs, although there are records of between 2 and 6. The eggs are white, calcareous and with dimensions of 57 mm long and 36 mm wide (average values).