New Caledonian crows have been filmed extracting a piece of food from a puzzle box by piecing together two separate rods. The birds were able to display highly flexible abilities to solve a complex problem without prior training. Until now, the ability to assemble different components had only been seen in great apes and humans Continue reading...
Clever crows: birds use tools in same way as great apes and humans - video
25. října 2018 16:30
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Zdroj: The Guardian