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首页> 外文期刊>Wader study: the international journal of shorebird science >Use of the Swale Estuary, SE England, by Grey Plovers Pluvialis squatarola
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Use of the Swale Estuary, SE England, by Grey Plovers Pluvialis squatarola

机译：使用Sweale Etruary，SE England，By Gray Ploved Pluvialis Squatarola

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摘要

Using counts and data on the primary moult and body mass of Grey Plover Pluvialis squatarola trapped on the Swale Estuary, SE England, over three decades, the ways in which nine distinct groups of Grey Plovers make use of the estuary between July and January are described. These comprise: (1) adults that stopover during southward migration, (2) adults that stop to carry out their flight-feather moult and remain for the winter, (3) adults that have started primary moult elsewhere and arrive in suspended moult, (4) adults that start primary moult on the Swale, suspend and move to complete elsewhere, (5) adults that carry out their whole primary moult on the Swale and then move to winter elsewhere, (6) juveniles that stopover during southward migration, (7) juveniles that stay for the winter, (8) first-summer birds that carry out their first large-feather moult and remain on the Swale for the winter, and (9) first-summer birds that carry out their first large-feather moult and then depart to winter elsewhere. The arrivals and departures of these distinct groups mean that many more Grey Plovers use the Swale than are indicated by the monthly counts, emphasising the conservation importance of the estuary for the species. The Swale Grey Plover population is of national importance in the United Kingdom and has sometimes exceeded the threshold of international importance in the East Atlantic Flyway.
机译：利用30多年来被困在英格兰东南部斯瓦尔河口的雨生灰梭鱼初级蜕皮和体重的计数和数据，描述了7月至1月期间九组不同的灰梭鱼利用河口的方式。这些包括：（1）在向南迁徙期间中途停留的成虫，（2）停下来进行飞行羽毛换羽并在冬季停留的成虫，（3）在其他地方开始初级换羽并以暂停换羽的方式到达的成虫，（4）在洼地上开始初级换羽、暂停并移动到其他地方完成的成虫，（5）成虫在洼地上进行整个初级换羽，然后转移到其他地方过冬，（6）在向南迁徙期间中途停留的幼鸟，（7）留守过冬的幼鸟，（8）第一只夏季鸟类进行第一次大型羽毛换羽，并在洼地上过冬，（9）第一批夏季鸟类进行第一次大型羽毛蜕皮，然后前往其他地方过冬。这些不同类群的到达和离开意味着，使用洼地的灰羽海鸟比每月计数显示的要多得多，这突出了河口对该物种的保护重要性。在英国，洼地灰船的数量具有国家重要性，有时在东大西洋航道上超过了国际重要性的阈值。

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