Diagram of the level of cooperation within and between groups, in accordance with prey size and in relation to acoustic behavior.

Translated from French: GUINET C., 1991. Socio-écologie des orques (Orcinus orca) de l’Archipel Crozet : une approche comparative. [Socio-ecology of killer whales (Orcinus orca) in Crozet Archipelago: a comparative approach.] Ph.D. Thesis, University of Aix-Marseille II, France

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