The assumption that crumbled first
The standard view held that episodic memory, the ability to mentally replay a specific past event, not just respond to a learned cue, was uniquely human. Then came a 1998 study by Nicola Clayton and Anthony Dickinson at Cambridge University, published in Nature, that changed the framing permanently. Western scrub jays, they found, could remember what food they had cached, where they had hidden it, and crucially, how long ago, adjusting their retrieval behavior based on whether the food would have spoiled. That is not conditioning. That is a bird tracking time, location, and content simultaneously.
