Platform Transmitting Terminal (PTT) tags have been used to track Macaroni Penguins (Eudyptes chrysolophus) and Gentoo Penguins (Pygoscelis papua) from Bird Island, South Georgia, since 1998. PTT tags use the ARGOS satellite system to collect geospatial data. These tags are deployed on a project-by-project basis and so data are not available for every year. Tags are generally deployed during the summer season, however, some winter data are available.

Platform Transmitting Terminal (PTT) tags have been used to track Macaroni Penguins (Eudyptes chrysolophus), Gentoo Penguins (Pygoscelis papua) and King Penguins (Aptenodytes patagonicus) from South Georgia since 2004. PTT tags use the ARGOS satellite system to collect geospatial data. These tags are deployed on a project-by-project basis and so data are not available for every year. Included in the dataset is data from females recorded during long, post-laying foraging periods as well as from fledged birds.

The diets of Macaroni Penguin (Eudyptes chrysolophus) and Gentoo Penguin (Pygoscelis papua) have been monitored on Bird Island since 1989. This dataset comprises data on composition of diet samples (Crustaceans, Cephalopod and fish) and measurements of krill carapaces, fish otoliths and squid beaks found in the samples. These measurements are used to estimate the length and weight of krill, fish and squid that have been consumed.