Southern Giant Petrel

The Southern Giant Petrel (Macronectes giganteus) is a large seabird of the southern oceans. Adults of the two species can be distinguished by the colour of their beak-tip: greenish in the southern and reddish in the northern. 
Behavior
The Southern Giant Petrel achieves sexual maturity at six or seven years of age the average age of first breeding is ten years. Its breeding season begins in October. Its nest is a mound of moss, grass, and stones and is located on bare or grassy ground. They form loose colonies except in the Falkland Islands where the colonies are much larger.
One white egg is laid. It is incubated for 55–66 days, where it is always guarded by at least one of the parents. When the white chick is born it is brooded for two to three weeks and it fledges at 104–132 days
Feeding
This Petrel feeds on Fish Krill Squid and waste from vessels in coastal and pelagic waters, where they often follow fishing boats and cruise ships. This Bird will eat Carrion. The Southern Giant Petrel is a predator and will kill other Seabirds (usually Penguin Chicks, Sick or Injured Adult Penguins, or Chicks of other Seabirds) it has been seen preying on the Australasian gannet by holding it underwater and drowning it. These birds have also been observed drowning yellow-nosed and black-browed Albatrosses