{"fact":"New Caledonian crows can creatively modify tools, even spontaneously bending straight wire into hooks to retrieve food.","context":"Previous observations of a New Caledonian crow (Corvus moneduloides) spontaneously bending wire and using it as a hook [Weir et al. (2002) Science 297:981] have prompted questions about the extent to which these animals ‘understand’ the physical causality involved in how hooks work and how to make them.","source":"Alex A. S. Weir; Alex Kacelnik, A New Caledonian crow (Corvus moneduloides) creatively re-designs tools by bending or unbending aluminium strips, 10.1007/s10071-006-0052-5","index":188}