Those clever and wonderful crows.

Apt for Halloween, let's marvel at those crows. They, and their cousins, always prove to far more crafty and aware of their world then we give them credit for.

We too often like to pretend that we alone can reason things out. That in nature, we are the only one that can truly solve problems.

How many humans would be oblivious to this puzzle?

(Thanks to Funny Wildlife.)