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首页> 外文期刊>The wilson journal of ornithology >Length of Hackle Iridescence Increases with Age in European Starlings (Sturnus vulgaris)
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Length of Hackle Iridescence Increases with Age in European Starlings (Sturnus vulgaris)

机译：欧洲Star鸟（寻常八哥）的Hack斑虹彩长度随年龄增加而增加

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摘要

Bird ornaments, such as plumage and song, can reflect the age of individuals. Knowledge of an individual's age and potential past breeding experience is important to future mates and to scientists studying matechoice decisions, levels of parental investment, and reproductive performance. The iridescent length of hackles (throat feathers) has been used to sex and age adult European Starlings (Sturmis vulgaris). We confirmed that males have longer portions of hackle iridescence and overall longer hackles than females, Although After Second Year (ASY) adults have longer hackle iridescence than Second Year (SY) adults, only two other studies that we know of have examined the iridescent length of hackles in the same individuals over time. We measured hackle iridescent length of returning adults over 8 years, and discovered that it continues to increase with age in both females (25/26) and males (21/21). It had the greatest increase over the I-year period when breeding adults switched from the SY to the ASY age category. Total hackle length also continued to increase with age, albeit more reliably for males (18/21) than females (13/26). These results demonstrate that hackle iridescence is a potential signal of age throughout the lifespan of a European Starling.
机译：诸如羽毛和歌曲之类的鸟饰品可以反映出个体的年龄。对一个人的年龄和潜在的过去繁殖经验的了解对于未来的配偶以及研究配子决定，父母投资水平和生殖性能的科学家来说都很重要。呈虹彩状的长形（喉咙羽毛）已被用于对成年欧洲八哥（Sturmis vulgaris）进行性别和年龄划分。我们确认，男性比女性具有更长的哈克虹彩部分，并且总体而言，黑头粉刺更长，尽管二年级（ASY）成年人比二年级（SY）成年人具有更长的哈克虹彩，但是我们仅知道的另外两项研究检查了虹彩长度随着时间的流逝，同一个人中的骇客数量也随之增加。我们测量了8岁以上返回成年人的哈克虹彩长度，发现在女性（25/26）和男性（21/21）中，虹彩呈虹彩的长度随着年龄的增长而持续增加。在I年期间，当成年育种从SY转变为ASY年龄类别时，增幅最大。尽管男性（18/21）比女性（13/26）更可靠，但总的ha头长度也随着年龄的增长而继续增加。这些结果表明，在欧洲Star鸟的整个生命周期中，虹彩呈虹彩是年龄的潜在信号。

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