Birds have been working round the clock to keep their chicks fed and to prepare them for the first big challenge of their lives.

If there to escape the winter, they'll have to leave the cliffs right away and get far out to sea.

But it's only been 20 days since they hatched, and their wings are still too weak for them to fly.

So far, their feet have never left the ground.

And there's only one way down to the safety of the sea.

300 meters below.

Reluctantly chicks take a few nervous steps towards the edge.

Encouraged by a gentle nudge leaps into the unknown.

Dad follows right behind him, reassuringly calling to his chick.

I made it.

The landings may not be stylish, but at least they're on target.