Stone the crows! Bird brains smarter than you think - NZ Herald
To lift a crow's mood, give it a toolkit
Crows Carry Cameras for Science
Making tools gives crows a big food boost | Ars Technica
Endangered Hawaiian crow's newly discovered tool use 'of great significance' | BelfastTelegraph.co.uk
Watch cockatoo genius chew out a tool from a piece of cardboard | New Scientist
Skilful cockatoos filmed making the same tool from different materials | Research | University of Oxford
Tool use comes naturally to crows
Nature Notes: How birds use tools | Local News | victoriaadvocate.com
Crows surprise researchers with advanced tool use | Research | The Guardian
Tool use to crow about
Wild New Caledonian crows possess tool-craft talent - BBC News
Crows use their bird brains to put together DIY tools - The Irish News
Animal Tool-Use - ScienceDirect
Unedited videos reveal the sophisticated tool-using behavior of Hawaiian crows | Ars Technica
Like chess players, these crows can plan several steps ahead
Bird Brainy
Wild cockatoos observed making and using tools to eat sea mango pits
Using Tools Puts Crows in a Good Mood | Inside Science
Bird tool use evolved for better grub, literally
Cockatoos not only use tools, they carry whole toolkits to trickier jobs | CNN
Cockatoos Make Tools from Different Materials - YouTube
Cockatoos learn to combine tools to get treats | CBC News
Puffins can use tools -- and they're smarter than scientists thought, a new study says | CNN
