Cameras capture never-before-seen footage of wild crows building tools - The Washington Post
Crows really enjoy using tools, researchers find - ABC News
To lift a crow's mood, give it a toolkit
New Caledonian crows' clearly profit from the care and craftsmanship they put into their tools – A new zoology thing for curious kids – 2 New Things
Can Crows Make Mental Pictures of Tools? - The New York Times
Flying Free—Again – San Diego Zoo Wildlife Alliance Stories
Tool Use – Barbara C. Klump
New Caledonian Crows Behave Optimistically after Using Tools - ScienceDirect
Inventive crows caught on camera making tools - CSMonitor.com
Geometry of tool-holding in NC crows.(a) NC crows often hold tools... | Download Scientific Diagram
After Using Tools, Crows are Happier and Behave More Optimistically: 'The pleasure of accomplishment'
New Caledonian crows keep 'valuable' hooked tools safer than basic non-hooked tools | eLife
Tool use comes naturally to crows
Beak or Tool | California Academy of Sciences
Compound tool construction by New Caledonian crows | Scientific Reports
Crows surprise researchers with advanced tool use | Research | The Guardian
New Caledonian Crows Learn by Doing – The Wire Science
Tool-Making Crows | PBS LearningMedia
Wild New Caledonian crows possess tool-craft talent - BBC News
Hawaiian Crows Join Tool-Users Club - The New York Times
Tool-Making Crows Are Even Smarter Than We Thought | Nat Geo Wild - YouTube
Making tools gives crows a big food boost | Ars Technica
IELTS EASY DEMO - New Caledonian Crow and The Use of Tools S12T4
