After nightfall, Xiang Kun didn't recklessly start searching everywhere. Instead, he cleared an area of mud, broke off a tree branch, and used it to mark the territories where his exploration over the past three days and the smell had indicated the presence of that mutant's "branches".
Xiang Kun put himself in the perspective of that mutant, guessing its possible behavior and activity trail based on its known abilities.
Undoubtedly, those "branches" scattered all over the forest could assist the mutant in staying vigilant and hunting.
So theoretically, the areas with the most "branches" would be the ones where it mostly hunts or around its nest.