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首页> 外文期刊>Behaviour >The role of food- and object-sharing in the development of social bonds in juvenile jackdaws (Corvus moneduld)
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The role of food- and object-sharing in the development of social bonds in juvenile jackdaws (Corvus moneduld)

机译：食物共享和对象共享在青少年寒鸦（Corvus moneduld）的社会纽带发展中的作用

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Food sharing in birds occurs largely in the context of parental care and courtship. Previous studies found that juvenile jackdaws demonstrate high levels of active giving outside these contexts in the 3 months following nest dispersal. The function ofthis behaviour is not understood, although it seemed compatible with hypotheses of mutualism (both participants benefit), reciprocity and harassment avoidance. We propose a new functional explanation for active giving in this species, namely facilitating the formation of social bonds. Captive juvenile jackdaws actively gave 2.5% of temporarily available food items and objects to peers, irrespective of sex and kinship. Active giving accounted for 43.7% of all food transfers. Donors advertised food and objects through a distinctive display and initiated active giving more than recipients. The direction of giving was initially unfocused, but became selective until each donor predominantly gave to one recipient and affiliative relationships were formed. We conclude that food-sharing may be an integral part of jackdaw ontogeny which allows juveniles to explore their social environment and facilitates the formation of affiliative relationships when family bonds dissolve. We also suggest that the ritualisedfood offer display may signal the 'collaborative intent' of the donor and serve to attract potential partners/mates.
机译：鸟类之间的食物共享主要发生在父母的照顾和求爱的背景下。先前的研究发现，幼鸟寒鸦在巢扩散后的3个月内，在这些环境中表现出高水平的主动给予。虽然这种行为的功能似乎与互惠主义（参与者均受益），互惠和避免骚扰的假设相符，但人们尚不清楚这种行为的功能。我们为该物种的主动捐赠提出了一种新的功能性解释，即促进了社会纽带的形成。圈养的幼年寒鸦主动向同龄人提供了2.5％的临时可用食品和物品，不论其性别和血统。主动捐赠占所有粮食转移的43.7％。捐助者通过与众不同的展示来宣传食品和物品，并发起了主动捐赠，超过了接受者。捐赠的方向最初没有重点，但变得有选择性，直到每个捐赠者主要捐赠给一个接受者并形成亲属关系为止。我们得出的结论是，食物共享可能是寒鸦个体发育的一个组成部分，它使青少年能够探索其社会环境，并在家庭纽带解散时促进亲属关系的形成。我们还建议，礼仪食品的展示可以表明捐助者的“协作意图”，并有助于吸引潜在的伴侣。

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