{"fact":"Not all crows use tools the same way. Rooks aren't as good with tools as New Caledonian crows because their beaks are different.","context":"Indeed, non-tool-using rooks are not as dexterous as C. moneduloides and C. hawaiiensis at using tools, presumably partly because they lack enabling bill features (Bird & Emery, 2009).","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":447}