Population monitoring of Wandering Albatross on Bird Island, South Georgia, from 1976 onwards (https://data.bas.ac.uk/metadata.php?id=GB/NERC/BAS/PDC/01202), accessed by contacting UK Polar Data Centre at polardatacentre@bas.ac.uk, [date in here dd/mm/yyyy]

We would strongly encourage contacting Richard Philips (raphil@bas.ac.uk ) for more information regarding this dataset, including guidance on its reuse.

Methodology:

The number of nests with an adult sitting on a nest with an egg are counted on 31st January every year. This is then corrected to take account of nest failures. The corrected total number of nests on the island is the total number of nests on the island on 31st January multiplied by the correction factor. To calculate a correction factor nests on the Wanderer Ridge study area (WRSA) are monitored daily for nest failures throughout the egg laying period. The correction factor = total number nests on WRSA throughout season/number nests on WRSA on 31st January. The corrected total of nests on Bird Island is used to calculate hatching and breeding success. However, if the total number of nests staked on the island is greater than the calculated corrected total, then the total number of nests staked is used in these calculations instead. All nests are checked on 1st April for hatched chicks and then monitored on a monthly basis throughout fledging. Hatching success is calculated as: 100*(number chicks on 1st April/corrected total number nests on the island).Breeding success is calculated as: 100*(number of chicks surviving to fledge/corrected total number nests on the island).Percentage of breeders retrapped is calculated as: 100*(number breeders retrapped/(2*corrected total number of nests on the island)).

All data were collected under permit from the Government of South Georgia and the South Sandwich Islands.

All sampling procedures used were regulated by the British Antarctic Survey Ethical Review Committee in collaboration with Cambridge University and the UK Home Office.