New Caledonian crows keep ‘valuable’ hooked tools safer than basic non-hooked tools - Klump, Barbara C; St Clair, James JH; Rutz, Christian (eLife, 2021)
Keywords: Animal behavior; Animals; Birds; Corvus moneduloides; Crows; Crows (Birds); Ecology; Experiments; extractive foraging; Female; Flowers & plants; Foraging behavior; Leaf litter; Male; optimal foraging; Population studies; Raw materials; tool manufacture; tool use; Tool Use Behavior; utility; Canada; New Caledonia; ecology; extractive foraging; tool use; tool manufacture; utility; optimal foraging; Corvus moneduloides