Inventive crows caught on camera making tools - CSMonitor.com
Unique beak evolved with tool use in New Cale | EurekAlert!
Compound tool construction by New Caledonian crows | Scientific Reports
Tool-Making Crows Are Even Smarter Than We Thought | Nat Geo Wild - YouTube
New Caledonian crows can create compound tools | Max-Planck-Gesellschaft
New Caledonian crows keep 'valuable' hooked tools safer than basic non-hooked tools | eLife
How Crows Use Tools to Solve Problems
Crows make tools by design, not by rote
Birdbrainy: New Caledonian crows make tools using mental images | Birds | The Guardian
Hawaiian Crows Show Talent for Tool Use | Sci.News
Cameras capture never-before-seen footage of wild crows building tools - The Washington Post
Bird brains? Tool-making crows show they really are cleversticks
Like humans, crows are more optimistic after making tools to solve a problem – Harvard Gazette
Making tools gives crows a big food boost | Ars Technica
Tool use comes naturally to crows
Crows really enjoy using tools, researchers find - ABC News
After Using Tools, Crows are Happier and Behave More Optimistically: 'The pleasure of accomplishment'
Tool Use Puts New Caledonian Crows in a Good Mood/ Curr. Biol., Aug. 1, 2019 (Vol. 29, Issue 16) - YouTube
Astonishing' New Caledonian crows make complex tools | Financial Times
Can Crows Make Mental Pictures of Tools? - The New York Times
Crafty New Caledonian Crows Can Assemble Tools | Smart News| Smithsonian Magazine
Beak or Tool | California Academy of Sciences
Study links evolution of New Caledonian beak with tool use - UPI.com
