[1]
I. Zuberogoitia, J. E. Martínez, A. Margalida, I. Gómez, A. Azkona, and J. A. Martínez, “Reduced food availability induces behavioural changes in Griffon Vulture Gyps fulvus ”, Ornis Fenn, vol. 87, no. 2, pp. 52–60, Jul. 2010.