Climate change is threatening the seabirds of St Kilda

Puffins and kittiwakes on Unesco world heritage site are at risk from warming seas, National Trust for Scotland findings show

The survival of seabirds including puffins and kittiwakes on St Kilda - the island archipelago home to one of the world's most important seabird populations - is being threatened by climate change, striking new evidence shows.

Naturalists have discovered that the kittiwake, a small migratory gull with ink-black wing tips, is on the brink of disappearing from St Kilda. The remote cluster of Scottish islands in the eastern Atlantic is the UK's only place with two Unesco world heritage site listings - for its culture and natural history - and one of only 24 sites with a dual listing worldwide.