The chicks’ reaction to a real or constructed hawk exemplifies what Jung calls an archetype: a symbol releasing energy in terms of a collective image. Those chickens never experienced a hawk before, yet they responded to it.
Campbell uses the chick’s innate flight-response to a hawk—experienced or constructed—as his primary empirical illustration of the Jungian archetype as a pre-experiential, collectively inherited image-release mechanism.
, Pathways to Bliss: Mythology and Personal Transformation, 2004thesis