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首页> 外文期刊>Journal of ornithology >Parental provisioning behaviour in a flock-living passerine, the Vinous-throated Parrotbill Paradoxornis webbianus
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Parental provisioning behaviour in a flock-living passerine, the Vinous-throated Parrotbill Paradoxornis webbianus

机译：羊群普通帕罗丁帕拉德·帕拉多斯帕拉多斯Webbianus的父母供应行为

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摘要

The amount of food delivered by parents to their chicks is affected by various life history traits as well as environmental and social factors, and this investment ultimately determines the current and future fitness of parents and their offspring. We studied parental provisioning behaviour in the Vinous-throated Parrotbill Paradoxornis webbianus, a species with an unusual social system that is characterised by flock-living, weak territoriality and variable nesting dispersion. Parental provisioning rate had a positive influence on chick mass gain, suggesting that provisioning rate is an effective measure of parental investment in this species. Males and females fed nestlings at approximately the same rate, and no other carers were observed at nests. Parents coordinated provisioning rates so that they mostly fed chicks synchronously. However, the extent to which parents coordinated provisioning was associated with their social environment, synchrony being positively related to local breeding density and negatively to nearest neighbour distance. The rate at which parents provisioned nestlings showed the same relationships with social measures, being greatest at higher density and when neighbours were closer. Visit rate was also related to chick age, but not to brood size, brood sex ratio, extra pair paternity, laying date, temperature, parents' body characters, time of day or year. We conclude that a breeding pairs' social environment plays an important role in determining parental investment, probably through its effects on the opportunities that parents have for foraging with conspecifics.
机译：父母向他们的小鸡提供的食物量受到各种生活历史特征以及环境和社会因素的影响，这一投资最终决定了父母及其后代的当前和未来的健身。我们研究了酒喉鹦鹉帕拉德诺斯·普拉德诺斯队的父母供应行为，一种具有不寻常的社会制度的物种，其特征是羊群生活，弱势和可变筑巢分散。父母拨款率对小鸡群众获得了积极影响，这表明拨款率是本物种父母投资的有效衡量标准。男性和女性以大约相同的速度美联储雏鸟，并且在巢穴中没有观察到其他护理人员。父母协调供应率，以便它们同时喂食小鸡。但是，父母协调拨备的程度与他们的社会环境有关，同步与当地育种密度与最近邻距离产生呈阳性相关的同步。父母被配置雏鸟的速度显示出与社会措施相同的关系，在更高的密度和邻居更接近时最大。访问率也与小鸡年龄有关，但不是育龄，性别比率，额外的父亲，铺设日期，温度，父母的身体人物，一天或年的时间。我们得出结论，育种对的社会环境在确定父母投资方面发挥着重要作用，可能是通过其对父母对员工觅食的机会的影响。

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