Notes
The Atlantic part of the data from:
Kopp M, Peter H, Mustafa O, Lisovski S, Ritz MS, Phillips RA, Hahn S (2011) South polar skuas from a single breeding population overwinter in different oceans though show similar migration patterns. Mar Ecol Prog Ser 435:263-267 https://doi.org/10.3354/meps09229
used in:
Tammy E. Davies,, Ana P.B. Carneiro, Marguerite Tarzia, et al. Multispecies tracking reveals a major seabird hotspot in the North Atlantic. Conservation Letters. 2021; 14:e12824. https://doi.org/10.1111/conl.12824