What Researchers Actually Filmed
In 2016, researchers from the University of Oxford published footage of New Caledonian crows in the wild doing something that had never been documented outside a laboratory: combining two separate materials to create a single functional tool. One crow picked up a short stick, found it too small to reach a food source, then located a longer hollow stem, inserted the short stick into it, and used the extended composite to extract prey from a crevice in a log. No researcher handed it components. No training trial preceded the attempt. The crow assessed a gap between what it had and what it needed, then closed that gap across two physical steps.
