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Incubation behaviors and patterns of nest attendance in common goldeneyes in interior Alaska

机译：在阿拉斯加室内常见白颊鸭的孵化行为和产卵方式

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摘要

We hypothesized that nest attendance characteristics in Common Goldeneyes (Bucephala clangula) at the northern limit of their range differ from those of more southern populations. In 2002 and 2003, we used artificial eggs containing temperature-sensing data loggers to obtain nest attendance data from 20 incubating females over 515 days. On average (+/-SE), each female spent 79.8 +/- 0.3% of the day on the nest, and took 2.9 +/- 0.1 recesses per day, each averaging 100.7 +/- 1.5 minutes. These recess characteristics were comparable to those reported for other Common Goldeneye populations. Most recesses (88%) occurred between 09:00 and 22:00 Alaskan Daylight Time although recesses were initiated at all times of day. Female incubation behavior does not appear to be strongly influenced by coarse-level environmental variables or the female-specific variables that we measured, but could be related to a complex assortment of fine-scale environmental or endogenous factors.
机译：我们假设，普通金眼（Bucephala clangula）在其范围的北端的出勤率与南部地区的不同。在2002年和2003年，我们使用包含温度感应数据记录器的人工卵从515天的20个孵化雌性中获得了巢照的数据。平均而言（+/- SE），每只雌性每天在巢上的时间为79.8 +/- 0.3％，每天有2.9 +/- 0.1的凹陷，平均每凹陷100.7 +/- 1.5分钟。这些凹陷特征可与其他普通金眼种群的特征相媲美。大多数休息时间（88％）发生在阿拉斯加夏令时间的09:00和22:00之间，尽管每天的所有时间都开始休息时间。女性的孵化行为似乎不受粗糙水平环境变量或我们测量的女性特定变量的强烈影响，但可能与复杂的精细尺度环境或内源性因素有关。

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