Funding for this research was provided by:
South African National Antarctic Programme
South African National Research Foundation
University of Cape Town
Article History
Received: 25 October 2017
Revised: 17 July 2018
Accepted: 18 July 2018
First Online: 24 July 2018
Compliance with ethical standards
:
: We declare that to our knowledge there are no conflicts of interest.
: This research was carried out under the guidance of the FitzPatrick Institute of African Ornithology and the methods used in this study were approved by the Science Faculty Animal Ethics Committee of the University of Cape Town.