This video from Britain is called Taking a look at terns 1: Common vs Arctic Tern.
BirdLife in the Netherlands reports that a few months ago, a new island was made for nesting Arctic terns.
The island is near the Punt van Reide-Breebaart nature reserve in Groningen province. A moat and an electic fence, against predation by foxes, separate it from the mainland.
Not only Arctic terns, also black-headed gulls will nest on the island. Good protection against raptors.
The Groninger Landschap conservationists, owners of the reserve, hope that a good nesting season for the terns will start, this April.
This is a Groninger Landschap video.