Parental care in the savannah sparrow
Parental care in the savannah sparrow
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萨凡纳麻雀的父母照顾
DOI：
10.1139/z83-370
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
M. Meunier
中科院分区：
文献类型：
--
作者：
J. Bédard;M. Meunier
本文研究了萨凡纳雀在雏鸟阶段的双亲照料分配。育雏的父母达到66%的白天期间在孵化后的第一个2天，下降到12%的雏鸟阶段结束。育雏的两个得到更多的育雏照顾比育雏的三个或四个雏鸟在最后2天的饲养。我们监测的身份，大小和数量的所有猎物的项目（专节肢动物）所带来的32嵌套对在628小时的观察。 这些估计值后来通过使用标准猎物项目的重量测量值转换为运输食物的干重估计值（单位为毫克/雏鸟/小时）。食物交付的数量随着雏鸟年龄的增长而稳步增加。在这方面，男性和女性的贡献几乎相等，但也有一些例外。估计的总能量进行雏鸟达到峰值显着的第5和第6天，之后下降。在...
The apportioning of parental care by male and female during the nestling stage was studied in the savannah sparrow (Passerculus sandwichensis). Brooding by both parents amounted to 66% of the daylight period during the first 2 days after hatching and decreased to 12% toward the end of the nestling stage. Broods of two received more brooding care than broods of either three or four nestlings during the last 2 days of rearing. We monitored the identity, size, and number of all the prey items (exclusively arthropods) brought by 32 nesting pairs during 628 h of observation. These estimates were later converted to estimates of dry weight of food transported (in milligrams per nestling per hour) by using weight measurements of standard prey items. The number of food deliveries increased steadily with nestling age. Males and females contributed nearly equally in this respect, with some exceptions. Estimates of gross energy carried to the nestlings peaked markedly on days 5 and 6 and decreased afterwards. During ...