Island of the tool users

Tool use is rare in the animal kingdom—but maybe not as rare as we once thought. Since Jane Goodall famously observed a chimpanzee fishing for termites, many new examples of animals using tools have come to light. Birds using sticks to forage for grubs. Sea otters using rocks to smash open mussels. Digger wasps using stones to close off their burrows. But as these examples mount, so do the scientific questions. What is tool use, really? What different forms does it take? Does it always imply a high degree of intelligence? And perhaps the biggest question of all: Why do some creatures use tools while so many others don't?

My guest today is Dr. Alice Auersperg. Alice is a cognitive biologist at the University of Veterinary Medicine in Vienna. She and her lab study innovation, technical cognition, and tool use in animals—especially in a species of parrot known as the Goffin's cockatoo.

Here, Alice and I talk about her lab's recent work with a certain remarkable cow. We discuss the wide variation in definitions of tool use across studies, and why some kinds of tool use are perhaps more impressive than others. We walk through some of her lab's most striking findings about tool use in the Goffin's cockatoo: for example, the finding that these birds don't just use tools but also make them—and can make the same tool out of different materials; the finding that they learn to use tools from others; and the finding that they recognize in some way the value of tools. We dig into some Alice's ideas about the big picture—why certain species use tools, and why so many tool users seem to live on islands. Along the way, Alice and I talk about whether tool use in birds is fundamentally different from tool use in primates; we talk about play and boldness; the allure of the sea mango; intrinsic motivation to combine objects; why tool use differs in captivity, at least in Great Apes; and why Goffin's cockatoos like to dunk their noodles in blueberry soy yogurt.

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