Traži Video
Tool-Making Crows
|
|
| Tool-Making Crows Kopiraj URL: In the Brevia section of the 9 August 2002 issue of Science, Weir et al. report a remarkable observation: The toolmaking behavior of New Caledonian crows. In the experiments, a captive female crow, confronted with a task that required a curved tool (retrieving a food-containing bucket from a vertical pipe), spontaneously bent a piece of straight wire into a hooked shape -- and then repeated the behavior in nine out of ten subsequent trials. Tags: crow tool Korisnik: quisling76 - 202390 pregleda |