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]