They did an experiment whereby the provided a long stick and a short stick.
then placed a nut at varying lengths. The crows worked out they could hook the nut with the short stick when the nut was at a shallow depth, and the long stick when it was at an intermediate depth. Clever.

When the scientists put it at a greater depth, the crow looked at it, hooked the short stick to the long stick and used the subsequent extra long stick to hook the nut out.

At that point, the research groups trousers exploded.
( Kroney, Thu 1 Mar 2012, 11:01, 1 reply, 14 years ago)

The rise of the planet of the Crows

( Naked Ape call me Caitlyn, Thu 1 Mar 2012, 11:02, Reply)

Bow to your corvid overlords.

( Kroney, Thu 1 Mar 2012, 11:03, Reply)