Anyway, who's to say the birds didn't detect a nearby predator which caused them to take flight?
The park rangers.
According to the law, their observation statement is sufficient for a conviction. Just like a statement from a police officer would be sufficient in a lot of cases. In fact, in the Netherlands, they have the legal status of "buitengewoon opsporingsambtenaar" which gives them limited police-like privileges.
You can't compare those cheeseheads with the rest of Europe. Therefor I'm sure that this stays a very isolated issue in Europe.
Welcome back Sternone! Have all the bruises on your ego from your previous frequent-visit period healed?