I am from Europe, and this is the reason why I asked.
Generally, I do not tip in hunting.
(in my country of Croatia at least, i do not tip, with exeption of good, higher class restaurants, where 10% tip is considered a gentlemans gesture, as well as few coins to leave on table in coffe bar for some nice looking waitress )
But also I understand that in entire Europe, not all the countries are the same.
Local cultures are different.
Local history is diferent and average economic standard is diferent.
So, there could be differences from place to place.
But, anyway, generally - no tipping in EU.
At least in former "western european countries" no tipping,
In East Europe, this has to be checked in advance.