This video is called Kentish Plover “Plumage Cleaning” (Charadrius alexandrinus).
On 1 August 2016, BirdLife in the Netherlands wrote that for the first time since 2009, Kentish plovers have nested on Texel island.
They were two couples: one on the Hors in the south, among little tern nests. And one in the north, on the beach near De Cocksdorp, close to ringed plovers.
Maybe they were originally from Vlieland, where this rare species still nests on the Vliehors sandy plain.