I have a niece who lives in Switzerland. She tells me that they are very strict about obeying local byelaws and have no hesitation in "reporting" infringements, even by their firends and relatives.
There are, of course, byelaws about how close to housing one may keep chickens in the UK too ~ I wonder if Berek has thought this through

Apart from foxes they also tend to attract rats, who will scavenge any food the hens do not consume ...... expect trouble from the neighbours Berek.