This video is called Common Loon (Gavia immer) Nest.
According to BirdLife in The Netherlands, due to the comparatively warm weather up to now, many birds who should already have migrated south, are still in The Netherlands.
If winter would really start now, then many of those birds would die.
They are birds like the chiffchaff.
And the pied wagtail, which at the annual bird count last year was seen just once, versus 61 times this year.
BirdLife says that bird species who do not like cold winters have become more numerous during the mild winters of recent years.
The names of those birds refer to winter and ice, respectively.
However, they both are vulnerable to frosty winters; and have their names from being visible in winter, being non-migratory with no leaves on trees in winter.
Both species are the only species in The Netherlands from families with many more species in warmer climates.
Though there may be global warming effects, many birds from Scandinavian and other countries still migrate to The Netherlands.
Today, quite some great northern divers (common loons) were seen.