Is it normal that even when you haven't touches a patrol
in Upper Trynton that going from second bough to the zoo that
they start attacking you ? I mean the Trynnie warriors.
And when that happens, the patrols join in which make it hard to kill them.
All help welcome.
BTW wizardry 8 is almost as good as the Bards Tale series was ;)

Trynnies shouldn't be attacking you unless you attacked them first. This happens a lot when you cast spells while blind and hit a trynnie. Check your faction ratings (in your journal page), if the Trynnies are listed as hostile, I'd say to reload further back until they're friendly.