Sources:
Borboroglu and Boersma. Penguins: Natural History and Conservation. University of Washington Press, 2013.
Lescroel et al. Breeding ecology of the gentoo penguin Pygoscelis papua at Kerguelen Archipelago. Polar Biol (2009) 32:1495–1505
DOI 10.1007/s00300-009-0647-9. Accessed at: http://www.cebc.cnrs.fr/publipdf/2009/LPB32_2009.pdf
Email correspondence with the UK Antarctic Heritage Trust.
Credits:
Designer – Karen Brazell
Producer – Eric R. Olson
Special thanks to Lisa Avis of the UK Antarctic Heritage Trust