This 28 June 2016 shows the osprey nest in Biesbosch national park. It is the first osprey nest ever known in the Netherlands.
I saw the nest myself. On the video in my report about that, one can see indirectly at least one young osprey is present, as it defecates in a curve over the side of the nest.
In this new video, one can see a young bird for the first time. Like other videos, it was filmed at a distance of hundreds of meters, as people being closer to the nest might disturb the ospreys.