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Is colony attendance by shearwaters influenced by bright moonlight orudinclement weather?

机译：受明亮的月光或 ud影响的剪切水对菌落的影响恶劣的天气？

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If nocturnal colony attendance is associated with avoidance of predators, fewer nests would be visited by parent shearwaters on moonlitudnights, or nests would be visited later, than on dark nights. Additionally, if shearwaters foraged at night on certain prey species, feeds deliveredudto nestlings would be larger on dark nights. We found that feed size and the probability of a nest visit were both greater on moonlit nights,udwhile food delivery after midnight was not. A minimal risk of predation concurs with the disregard for moonlight shown by Flesh-footedudShearwaters, Puffinus carneipes, but does not explain their apparent preference for it. While nocturnal foraging is unlikely, it is not clearudwhy feeds were significantly larger on moonlit nights, or why colony attendance by this species is strictly nocturnal. Weather may impactudthe ability of seabirds to forage at sea, although this is difficult to confirm. It was likely that nest attendance by parent shearwaters wouldudbe lower if certain variables negatively influenced foraging, but such influences may not manifest themselves immediately. Nest visits wereudexamined in relation to local weather conditions at time-lag intervals of up to seven days. While no significant cross correlations wereuddetermined between burrow entry and two wind-velocity variables, a significant positive correlation was determined when the study siteudexperienced pronounced unseasonal rainfall events.
机译：如果夜间殖民地出勤与避免掠食者有关，那么与月黑夜相比，父母的剪水在月光阴暗的夜晚访巢的次数会更少，或者巢巢访巢的时间要晚于漆黑的夜晚。另外，如果在某些猎物上夜间觅食剪水，则在漆黑的夜晚，刚孵出的饲料会更大。我们发现，在月光下的夜晚，饲料的大小和造巢的可能性都更大，而午夜后的送餐则没有。肉食足 udShearwaters（Puffinus carneipes）表现出对月光的无视，使被捕食的风险最小，但并未解释其明显的偏好。尽管夜间觅食的可能性不大，但尚不清楚为什么在月光下的夜晚饲料显着增加，或者为什么这个物种的殖民地出游严格是夜间的。天气可能会影响海鸟在海上觅食的能力，尽管这一点很难确认。如果某些变量对觅食产生负面影响，则母本剪切水筑巢的人数可能会降低，但这种影响可能不会立即显现出来。巢探访根据当地天气状况进行了地沙米胺检查，间隔时间最长为7天。虽然未确定洞穴进入与两个风速变量之间存在显着的互相关，但当研究地点未经历明显的非季节性降雨事件时，却确定了显着的正相关。

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    Powell C; Bradley S; Wooler R;

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