Hooded crows (Corvus cornix) manufacture objects relative to a mental template by Anna A. Smirnova, Leia R. Bulgakova, Maria A. Cheplakova, Sarah A. Jelbert

“…Abstract It was recently found that not only tool-specialized New Caledonian crows, but also Goffin cockatoos can manufacture physical objects in accordance with a mental template. …”
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