Cleverest crows opt for two tools

The crows used two tools to get to their treats

New Caledonian crow (University of Auckland) Crows have shown that two tools are better than one when it comes to problem solving, scientists say.

A University of Auckland study has revealed that New Caledonian crows can use separate tools in quick succession to retrieve an out-of-reach snack.

The birds were using reasoning that was more commonly seen in great apes and humans, the New Zealand team reported in the journal Current Biology.

New Caledonian crows are renowned for their tool-making ability.