This 28 September 2015 video shows various bird species on the Richel sandbank, near Vlieland island in the Netherlands. Among the bird species visiting Richel are dunlin, oystercatcher, sanderling and others.
Two wardens studied birds on Richel recently for ten days.
Among other individual birds they recognized were sanderlings and ringed plovers. And a great black-backed gull, ringed in 2008 in Norway. Probably it nests in Norway and goes each year to the Richel for wintering.
Griend island important for sanderlings: here.