Tool-using crow: Rare bird joins clever animal elite - BBC News
Cockatoos learn to combine tools to get treats | CBC News
Are you a Bird Brain?
Nature Notes: How birds use tools | Local News | victoriaadvocate.com
Insightful problem solving and creative tool modification by captive nontool-using rooks | PNAS
Wild cockatoos observed making and using tools to eat sea mango pits
Why clever crow is no bird brain
Cockatoos Make Tools from Different Materials - YouTube
Crafty Crows Teach Each Other How to Make Tools | The Science Explorer
Endangered Hawaiian crow's newly discovered tool use 'of great significance' | BelfastTelegraph.co.uk
Crows surprise researchers with advanced tool use | Research | The Guardian
Intelligent Crows Use Tools
Stone the crows! Bird brains smarter than you think - NZ Herald
Crows really enjoy using tools, researchers find - ABC News
Skilful cockatoos filmed making the same tool from different materials | Research | University of Oxford
Tool use to crow about
Crows Carry Cameras for Science
Animal Tool-Use - ScienceDirect
New Caledonian Crows Enjoy Using Tools, Study Finds | Sci.News
Using Tools Puts Crows in a Good Mood | Inside Science
Tool-Making Crows Are Even Smarter Than We Thought | Nat Geo Wild - YouTube
Hawaiian Crows Join Tool-Users Club - The New York Times
Wild New Caledonian crows possess tool-craft talent - BBC News
Tool use comes naturally to crows
Hawaiian crows show their tool-using smarts | Science | AAAS
Tool Using
