Crows have become highly skilled at making a living
in these new urban environments.
In this Japanese city, they have devised
a way of eating a food that normally they can't manage.
[CROWS CAWING]
Dropping a road from a great height onto a hard road
does sometimes crack it.
But some nuts are particularly tough,
so the crows have devised a better way.
Drop it among the traffic.
[ENGINES WHIRRING]
[CRACK]
The problem now is collecting the bits
without getting run over.
[CARS WHIZZING BY]
So some birds have refined their technique.
They station themselves beside pedestrian crossings.
Wait for the lights to stop the traffic.
[BEEPING]
Then collect your cracked nut in safety.
[HORN HONKING]