This crow bends wire into a hook to fish food out of a tube, unprompted

New Caledonian crows craft hooked tools from twigs in the wild, stripping and shaping them to pull grubs out of tight crevices. In a 2002 lab test, a crow named Betty spontaneously bent a straight piece of wire into a hook to retrieve a food basket from a tube, a tool-making feat no one had shown her, done on her very first attempt.

— Alex A. S. Weir, Jackie Chappell, and Alex Kacelnik, Crafting of Hooks in Tool Use by New Caledonian Crows — Science, 2002

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