To investigate further, the team presented the crows with a wooden table, divided into two compartments. A treat was at the end of each compartment, but in one, it was positioned behind a rectangular trap hole. To get the snack, the crow had to consistently choose to retrieve food from the compartment without the hole.

A recent study of great apes found they could not transfer success at the trap-tube to success at the trap-table. The three crows could, however.

Crows kinda freak me out!

Messengers of death, and smart too!

Fantastic creatures. Smart and social. Nothing evil about them, just superstition and bad press.

In Australia, crows have learned to tip the introduced poisonous cane toad on it's back, and eat them from underneath, thus avoiding the poison glands.
Very very clever birds.