Behavioural ecology: Tool manufacture by naive juvenile crows
Behavioural ecology: Tool manufacture by naive juvenile crows
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行为生态学：天真的幼乌鸦制造工具
作者：
B. Kenward;A. A. Weir;C. Rutz;A. Kacelnik
新喀里多尼亚乌鸦（Corvus moneduloides）是最多产的鸟类工具使用者。他们工具形状的区域差异可能是累积的文化进化的结果-这一现象被认为是人类文化的标志。在这里，我们表明，手提出的少年新喀里多尼亚乌鸦自发地制造和使用工具，没有任何接触的成年人的物种或任何事先演示的人类。我们的发现是在这个物种和一般动物中建立文化传播的知情模型的关键一步。
New Caledonian crows (Corvus moneduloides) are the most prolific avian tool-users. Regional variation in the shape of their tools may be the result of cumulative cultural evolution — a phenomenon considered to be a hallmark of human culture. Here we show that hand-raised juvenile New Caledonian crows spontaneously manufacture and use tools, without any contact with adults of their species or any prior demonstration by humans. Our finding is a crucial step towards producing informed models of cultural transmission in this species, and in animals in general.