Black-bellied Storm Petrel (Fregetta tropica)
The Black-bellied Storm Petrel (Fregetta tropica) is a species of seabird in the Hydrobatidae family.
It is found in Antarctica, Argentina, Australia, Bouvet Island, Brazil, Chile, Falkland Islands, French Polynesia, French Southern Territories, Madagascar, Mozambique, New Zealand, Oman, Peru, Saint Helena, São Tomé and Príncipe, Solomon Islands, South Africa, South Georgia and the South Sandwich Islands, Uruguay, and Vanuatu. (wikipedia)
This is a large blackish storm-petrel with white rump (uppertail coverts) and white belly. Separated from similar White-bellied Storm-petrel by black stripe along the center of the white belly patch, darker upperparts, dark vent and more obvious pale carpal bar. Often accompanies ships, preferring to run alongside or even follow the bow wave. This is a very cool petrel and I was thrilled to see quite a few during the sea-days of the trip. The species tends to trail its legs behind and bounces breast first into waves, leaving the right leg to trail in the water. This was taken while steaming around South Georgia.