One stick, different grips
A small food reward and a stick confront the Goffin’s cockatoos. A bird holds the tool with beak and tongue; another uses a foot; another secures it at the entrance. 11 adult birds entered the baseline task in a peer-reviewed experiment at the Goffin Lab in Austria. Their different techniques with a balanced stick did not produce a significant difference in completion time. The first surprise is the variety of bodily actions capable of reaching the same goal.[1]
Taking that variety seriously changes the position from which we recognize another mind. Looking for the movement most familiar from a human hand can obscure what a foot or beak makes possible. I read these actions as an invitation to think about intelligence through the different relationships bodies form with the world. The observed behaviour gives that interpretation a concrete foothold, without making the birds’ inner experience fully accessible to us.[1]
When the weight shifts
The tool then changes. 10 birds in the weighted-tool experiment insert an unevenly balanced stick into a horizontal or vertical slit. The entrance support available earlier is removed. 5 birds change technique, and 8 change either technique or weight-related handling. Birds that had secured the tool at the entrance adapt to the new conditions. Others keep methods that continue to work. Both adjustment and persistence have a place within the same experiment.[1]
My inference is that caution is needed before making one behaviour the measure of success for every individual. Keeping an old grip may mean that the practical problem is already solved for that bird. Previous experience, physical capacity and motivation offer other explanations for the differences. Those alternatives prevent us from treating every movement as evidence of a new thought. Asking which possibilities an individual actually encounters nevertheless provides a richer understanding than asking only whether it reaches a shared goal.[1]
Room for another mind
The birds were captive-reared and already experienced with tools. This small group therefore does not represent every wild Goffin’s cockatoo. The experiment also does not establish human-like concepts of physics. An open question remains between successfully turning a weighted tool and constructing the explanation a human gives for its weight. That boundary leaves the observed adjustments intact while requiring care in the meaning we attach to them.[1]
The cockatoos open a space for recognizing another creature’s abilities without making resemblance to ourselves the sole criterion. Beak, tongue and foot find different routes through the same world. We can attend to an individual’s body and history rather than arrange these findings along a ladder of intelligence. To me, that kind of attention is one of the human possibilities scientific curiosity creates. The variety of ways to hold a stick can also widen the room we make for minds with which we share the world.[1]