Physical cognition: birds learn the structural efficacy of nest material.
Physical cognition: birds learn the structural efficacy of nest material.
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DOI：
10.1098/rspb.2013.3225
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发表时间：
2014-06-07
期刊：
影响因子：
--
通讯作者：
Healy SD
中科院分区：
文献类型：
--
作者：
Bailey IE;Morgan KV;Bertin M;Meddle SL;Healy SD
一般认为，鸟类选择结构合适的材料筑巢是由基因决定的。在这里，我们通过调查经验是否影响雄性斑胸草雀（Taeniopygia guttata）对筑巢材料的选择来验证这一假设。在短时间内用相对灵活的绳子建造后，鸟类更倾向于用更硬的绳子建造，而那些经历过更硬的绳子的鸟类对绳子的类型漠不关心。然而，在用任何一种类型的绳子建造一个完整的鸟巢后，所有的鸟都增加了对硬绳子的偏好。较硬的绳子似乎是更有效的建筑材料，因为鸟类建造有顶的鸟巢所需的较硬的绳子比柔性的绳子更少。对于那些成功养育了雏鸟的鸟类来说，它们用来筑巢的材料和它们后来喜欢的类型之间没有联系。鸟类对材料的偏好既不反映其父亲的偏好，也不反映其兄弟姐妹的偏好，但幼鸟对两种类型的绳子的经验都增加了它们对硬绳子的偏好。我们的研究结果代表了两个重要的进展：(i)鸟类根据材料的结构特性选择鸟巢材料；（ii）巢材偏好并非完全由基因决定，因为经验的种类和数量都会影响鸟类的选择。
It is generally assumed that birds’ choice of structurally suitable materials for nest building is genetically predetermined. Here, we tested that assumption by investigating whether experience affected male zebra finches’ (Taeniopygia guttata) choice of nest material. After a short period of building with relatively flexible string, birds preferred to build with stiffer string while those that had experienced a stiffer string were indifferent to string type. After building a complete nest with either string type, however, all birds increased their preference for stiff string. The stiffer string appeared to be the more effective building material as birds required fewer pieces of stiffer than flexible string to build a roofed nest. For birds that raised chicks successfully, there was no association between the material they used to build their nest and the type they subsequently preferred. Birds’ material preference reflected neither the preference of their father nor of their siblings but juvenile experience of either string type increased their preference for stiffer string. Our results represent two important advances: (i) birds choose nest material based on the structural properties of the material; (ii) nest material preference is not entirely genetically predetermined as both the type and amount of experience influences birds’ choices.
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