Funding for this research was provided by:
Natural Environment Research Council (NE/L002434/1)
Text and Data Mining valid from 2020-02-06
Received: 1 June 2019
Accepted: 4 December 2019
First Online: 6 February 2020
Compliance with ethical standards
: The authors declare no conflict of interest.
: Diet sampling was approved by the British Antarctic Survey Ethics Committee and carried out with permission of the Government of South Georgia and the South Sandwich Islands.