Scientists have observed wild cockatoos making their own cutlery set—crafting the equivalent of a crowbar, an ice pick, and a spoon to pry open one of their favorite fruits.
, make and use tools in the wild, often to extract food, but none seems to make a set of tools.
So, the team captured small flocks of 15 individuals at a time and brought them to their research aviary to study for several months before setting them free. With their strong, curved beaks, Goffin’s cockatoos can feed on many types of fruit. The scientists provided the birds with papayas and young coconuts, but the parrots never fabricated a single tool to help eat those foods. “They were playful and would pick up sticks, and bite off twigs,” O’Hara adds, “but not in any purposeful way.
O’Hara watched in amazement as a male cockatoo bit away the fruit’s skin, then quickly severed a small branch from a tree inside the aviary, and with a series of quick bites whittled its thick stump into a wedge-shaped tool. Holding the fruit with his left foot while perching on his right, he used his tongue to fit the wedge into the pit’s fissure, prying the pit open.
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