{"fact":"Tool use may have first appeared in a shared ancestor of all crow species.","context":"Thus, the cognitive ability for basic tool use probably arose in the common ancestor of Corvus (Lefebvre, Nicolakakis, & Boire, 2002).","source":"Nicolas Dussex; Verena E. Kutschera; R. Axel W. Wiberg; Darren J. Parker; Gavin R. Hunt; Russell D. Gray; Kim Rutherford; Hideaki Abe; Robert C. Fleischer; Michael G. Ritchie; Christian Rutz; Jochen B. W. Wolf; Neil J. Gemmell, A genome‐wide investigation of adaptive signatures in protein‐coding genes related to tool behaviour in New Caledonian and Hawaiian crows, 10.1111/mec.15775","index":446}