On exactly one night in its entire lifetime, the yucca moth discovers pollen in the opened flowers of the yucca plant, forms some into a pellet, and then transports this pellet, with one of its eggs, to the pistil of another yucca plant. This activity cannot be "learned"; it makes more sense to describe the yucca moth as experiencing intuition about how to act. Archetypes and instincts coexist in the collective unconscious as interdependent opposites, Jung would later clarify. Whereas for most animals intuitive understandings completely intertwine with instinct, in humans the archetypes have become a separate register of mental phenomena.