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首页> 外文期刊>The wilson journal of ornithology >Increase in Numbers and Potential Phenological Adjustment of Ruby-throated Hummingbirds (Archilochus colubris) during Autumn Migration at Hawk Mountain Sanctuary, Eastern Pennsylvania, 1990-2014
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Increase in Numbers and Potential Phenological Adjustment of Ruby-throated Hummingbirds (Archilochus colubris) during Autumn Migration at Hawk Mountain Sanctuary, Eastern Pennsylvania, 1990-2014

机译：1990-2014年，宾夕法尼亚州东部霍克山保护区秋季迁徙期间，红宝石喉蜂鸟（Archilochus colubris）的数量增加和潜在的物候调整

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摘要

Global change can affect several aspects of bird biology, including population size and migration timing. We used count data collected during 25 years (1990-2014) at Hawk Mountain Sanctuary, a raptor migration watch-site in eastern Pennsylvania, to investigate population changes in Ruby-throated Hummingbirds (Archilochus colubris) and the timing of their autumn migration, in light of ongoing climate change. Hummingbird numbers increased significantly from 1990-2014. The first 5%-, 50%-, 95%- and average passage dates of hummingbirds over this time indicated an earlier passage, with the first 5% passage-date shifting earlier significantly. Passage duration (number of days between 5% and 95% of the flight) remained relatively constant from 1990-2014. In light of similar shifts in timing of spring passage of this species, our results suggest that Ruby-throated Hummingbirds may be shifting the timing of their migratory cycle.
机译：全球变化会影响鸟类生物学的多个方面，包括种群数量和迁徙时机。我们使用了在宾夕法尼亚州东部的猛禽迁徙监视站点Hawk Mountain Sanctuary（在25年内（1990-2014年）收集的计数数据）调查了美洲红宝石喉蜂鸟（Archilochus colubris）的种群变化及其秋季迁徙的时间。根据持续的气候变化。从1990年至2014年，蜂鸟的数量显着增加。蜂鸟在这段时间内的前5％，50％，95％和平均传代日期表明传代时间更早，而前5％传代日期则明显提前。从1990年到2014年，航程持续时间（飞行时间5％至95％之间的天数）保持相对恒定。鉴于该物种春季迁徙时间的类似变化，我们的结果表明，红宝石喉蜂鸟可能正在改变其迁徙周期的时间。

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