What foraging behavior demonstrates the unau's tendency to rely on learned knowledge about local flora?

Answer

Feeding on the same few tree species until depletion

The unau has a tendency to feed on the leaves from the same few species of trees within their territory until they are depleted, which is an energy conservation tactic based on learned knowledge about low-toxicity, high-yield foliage.

What foraging behavior demonstrates the unau's tendency to rely on learned knowledge about local flora?
dietanimalleafUnauSloth