Using Tools Puts Crows in a Good Mood | Inside Science
Scientists Have Found Another Crow That Uses Tools - The Atlantic
Tool-Making Crows | PBS LearningMedia
New Caledonian crows keep 'valuable' hooked tools safer than basic non-hooked tools | eLife
Like chess players, these crows can plan several steps ahead
Crows Perform Yet Another Skill Once Thought Distinctively Human | Scientific American
To lift a crow's mood, give it a toolkit
New Caledonian crows can create tools from multiple parts | University of Oxford
Hawaiian Crows Join Tool-Users Club - The New York Times
Wild New Caledonian crows possess tool-craft talent - BBC News
Making tools gives crows a big food boost | Ars Technica
Inventive crows caught on camera making tools - CSMonitor.com
Compound tool construction by New Caledonian crows | Scientific Reports
Tool-Making Crows - YouTube
Like humans, crows are more optimistic after making tools to solve a problem — Harvard Gazette
After Using Tools, Crows are Happier and Behave More Optimistically: 'The pleasure of accomplishment'
Crows surprise researchers with advanced tool use | Research | The Guardian
Crows really enjoy using tools, researchers find - ABC News
Intelligent Crows: The Brainiacs Of the Animal World | Time
New Caledonian crow - Wikipedia
Hawaiian crows show their tool-using smarts | Science | AAAS
Can Crows Make Mental Pictures of Tools? - The New York Times
Crows rock at making complex tools: Study – FIREPAW, Inc.
Unedited videos reveal the sophisticated tool-using behavior of Hawaiian crows | Ars Technica
Canny crows know their tools
IELTS EASY DEMO - New Caledonian Crow and The Use of Tools S12T4
