PZ Myers offers us a short movie of a creative crow. The crow has the job of lifting a bucket with a food reward out of the tube…and all it’s given to do the job is a straight piece of wire. Watch it closely and you can see it make a hook in the wire so it can snag the handle of the bucket and lift it out.
The bird did this spontaneously. They’d been trained to select between and straight wire and a hooked wire, but when the hooked wire was missing (a male had flown off with it), she just made do with what was available. Isn’t she clever?