Haftorn , Svein. “A Quantitative Analysis of the Behaviour of the Chinstrap Penguin Pygoscelis Antarctica and Macaroni Penguin Eudyptes Chrysolophus on Bouvetoya During the Late Incubation and Early Nestling Periods”. Polar Research 4, no. 1 (January 5, 1986): 33-45. Accessed April 5, 2026. https://polarresearch.net/index.php/polar/article/view/2489.