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机译:Food calling in wild ravens ( i Corvus corax/iCorvus corax ) revisited: Who is addressed?
Lancaster Environment CentreLancaster UniversityUK;
Department of Cognitive BiologyUniversity of ViennaVienna,Austria;
Konrad Lorenz ForschungsstelleUniversity of ViennaVienna,Austria;
common raven; fission–fusion dynamics; food‐associated calls; functional referential signal; individual recognition; recruitment; social foraging;