{"fact":"Hawaiian crows aren't close relatives of New Caledonian crows, suggesting their tool-using skills evolved independently.","context":"Importantly, New Caledonian and Hawaiian crows are not closely related (Jønsson, Fabre, & Irestedt, 2012), suggesting that their tool behaviour arose convergently, in response to similar ecological conditions prevailing on their tropical home islands (Rutz et al., 2016).","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":442}