Apes (Gorilla gorilla, Pan paniscus, P. troglodytes, Pongo abelii) versus corvids (Corvus corax, C. corone) in a support task: the effect of pattern and functionality

Journal of Comparative Psychology (2012) - Comment
pubmed: 22545765 doi: 10.1037/a0028050 issn: 1939-2087 issn: 0735-7036

Anna Albiach-Serrano, Thomas Bugnyar, Josep Call