The Northern Giant Petrel, Hall's Giant PetrelMacronectes halli, is a large seabird of the southern oceans. Adults of the two species can be separated by the color of their bill-tip: greenish in the Southern and reddish, pinkish, yellow in the Northern. The Southern Giant Petrel may have a white morph with a white head. These photos were taken on the pelagic trip from Kaikoura, South New Zealand.