Trans-equatorial migration routes, staging sites and wintering areas of a high-Arctic avian predator: the long-tailed Skua (Stercorarius longicaudus). oleh Olivier Gilg, Børge Moe, Sveinn Are Hanssen, Niels Martin Schmidt, Benoît Sittler, Jannik Hansen, Jeroen Reneerkens, Brigitte Sabard, Olivier Chastel, Jérôme Moreau, Richard A Phillips, Thomas Oudman, Elisabeth M Biersma, Anette A Fenstad, Johannes Lang, Loïc Bollache