In Czech folklore, Jays are the guardians of the forest due to their habit to make an awful lot of noise when they spot humans. They also used to be game birds and considered to be a pest, but they are protected by law now all year round. So when a gamekeeper wants to adorn his hat with a jay feather, as per custom, nowadays he has to find the feather in the forest and cannot just kill the bird for them.
They are beautiful but tiny and rare to find. This one is less than 5 cm long.