Crows surprise researchers with advanced tool use | Research | The Guardian
Compound tool construction by New Caledonian crows | Scientific Reports
Unique Beak Evolved with Tool Use in New Caledonian Crow | All About Birds All About Birds
Hawaiian Crows Join Tool-Users Club - The New York Times
Canny crows know their tools
IELTS EASY DEMO - New Caledonian Crow and The Use of Tools S12T4
After Using Tools, Crows are Happier and Behave More Optimistically: 'The pleasure of accomplishment'
New Caledonian crow - Wikipedia
Can Crows Make Mental Pictures of Tools? - The New York Times
New Caledonian crows can create tools from multiple parts | University of Oxford
Crows Perform Yet Another Skill Once Thought Distinctively Human | Scientific American
To lift a crow's mood, give it a toolkit
Like chess players, these crows can plan several steps ahead
Unedited videos reveal the sophisticated tool-using behavior of Hawaiian crows | Ars Technica
Cameras capture never-before-seen footage of wild crows building tools - The Washington Post
Like humans, crows are more optimistic after making tools to solve a problem — Harvard Gazette
Tool bending in New Caledonian crows | Royal Society Open Science
The Intelligent Crow: Exploring Human-Animal Relationships Cross-Culturally | Human Relations Area Files
New Caledonian crows can create compound tools | Max-Planck-Gesellschaft
Using Tools Puts Crows in a Good Mood | Inside Science
Tool use comes naturally to crows
Bird Brainy
Tool-Making Crows Are Even Smarter Than We Thought | Nat Geo Wild - YouTube
Crows share tricks of the trade
Crows really enjoy using tools, researchers find - ABC News
Inventive crows caught on camera making tools - CSMonitor.com
New Caledonian Crows Behave Optimistically after Using Tools - ScienceDirect
