Breeding success of macaroni penguins at Bird Island, South Georgia, from 1978 to 2025 - VERSION 2.0

The breeding success (calculated from nest and chick counts) of macaroni penguins is monitored annually at Bird Island, South Georgia. A transect is used to estimate the incubating nests and chicks hatched in the large colony at Goldcrest Point where counts have been made since 1976. The number of incubating nests and chicks reaching fledging stage in the whole of the smaller colony at Fairy Point are counted and data exist from 1982 onwards. This dataset is an updated version of Trathan, P., Waluda, C., & Ratcliffe, N. (2021). Breeding success of Macaroni penguins at Bird Island, South Georgia, from 1982 to 2020 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/1a266e7b-ef8d-4db7-8e7c-155be21d17cd. The update consists of five additional years of data. No changes have been made to the data included in version 1.0 of the dataset. This work was funded by Natural Environment Research Council (UK) core funding to the British Antarctic Survey.