Supplement to: Nesterova, Anna P; Le Bohec, Céline; Beaune, David; Pettex, Emeline; Le Maho, Yvon; Bonadonna, Francesco (2010): Do penguins dare to walk at night? Visual cues influence king penguin colony arrivals and departures. Behavioral Ecology and Sociobiology, 64(7), 1145-1156, https://doi.org/10.1007/s00265-010-0930-3