This is a hobby video.
In the Stadhoudersplantsoen in The Hague, year after year, a hobby couple nests. They nest in an old crows’ nest in an old tree which may be cut down soon. Local conservationists have put an artificial nest in another tree not far away, to provide alternative space.
In Leiden, there will be research whether a plan to cut down trees can go ahead or not, as a hobby couple may nest in one of those trees.