As the weather clears more birds join the throng.

Including a puffin, rather late on the scene.

While all over the colony birds are settling in, he faces an uphill struggle.

With 8,000 puffins nesting on Hornøya the slopes are already crowded.

He must navigate through this increasingly fractious crowd to his old nest hole.

With burrows always in short supply, everyone is ready to defend their patch.

He keeps his head down, hoping to avoid any trouble, but he's unwittingly strayed into dangerous territory.

A gaping beak is a warning and the wider the beak, the angrier the puffin ...and puffins fight dirty!