2nd Tool-Using Crow Species Found

The critically endangered Hawaiian crow can use sticks to deftly fish for food that is out of reach, according to a new study. "The Hawaiian crows are incredibly good at using tools," said lead study author Christian Rutz, a biologist at the University of St Andrews in the United Kingdom. Until now, New Caledonian crows had been the only corvid (a group that includes crows, ravens and rooks) species known to use tools.