Reference

Dariusz Jakubas, Lech M. Iliszko, Hallvard Strom, Halfdan H. Helgason, Lech Stempniewicz (2018): Flexibility of foraging strategies of the great skua Stercorarius skua breeding in the largest colony in the Barents Sea region – Frontiers in Zoology – 2018: 9-0001-9-0014.