Crows show some ingenuity to get food. 

That's an understandable motivation. We all enjoy the satisfaction produced by a replete stomach.

But that's all the crows want.  Whereas we humans go further, beyond the stomach. Humans are interested in higher things.

Things that crows can't ever grasp, such as reading, writing, mathematics, and Science.

Therefore, let's not too fussed about avian intelligence.  Aren't all humans intellectual giants, compared to crows?