This dataset comprises the annual count of chinstrap penguins arriving to Signy Island each breeding season, from 1996 to 2020. Penguins arriving at the beach in mid to late November (the austral summer) were counted. This monitoring contributes to the CCAMLR (Commission for the Conservation of Antarctic Marine Living Resources) Ecosystem Monitoring Program (CEMP) and is part of the annual seabird Long Term Monitoring carried out by the British Antarctic Survey at Signy Island. Ecosystems component of BAS Polar Science for Planet Earth Programme, funded by NERC.

This dataset comprises the breeding success of 100 northern rockhopper penguins at Nightingale Island (37 deg 25 S, 12 deg 28 W: 4 km2), Tristan da Cunha in 2016. The data provides information on nests throughout the breeding season. This information supports the ongoing conservation work at Tristan. Data were collected by project personnel as part of the Darwin Plus funded Project Pinnamin (grant DPLUS 053), 2016 - 2018.