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Differential timing of autumn migration between sex groups in adult European honey buzzards Pernis apivorus
Avian Biology Research ( IF 0.6 ) Pub Date : 2021-03-17 , DOI: 10.1177/1758155921997364
Michele Cento 1 , Vittoria Malpassuti 2 , Giacomo Dell’Omo 1 , Nicolantonio Agostini 3
Affiliation  

The European honey buzzard Pernis apivorus is a summer visitor in Europe, wintering mostly in West-central Africa. Previous studies concerning timing of autumn migration in relation to sex groups provided contrasting results. In particular, a field survey made in southern Sweden did not report differences in timing, while a satellite study via GPS tracking on six adults, three males, and three females, revealed that the latter departed earlier. The aim of this 4-year study is to further investigate the timing of autumn migration in this species carrying out observations at the Strait of Messina, a bottleneck located along the Central Mediterranean flyway, between August 10th and September 30th 2016–2019. Adult European honey buzzards concentrated the passage between late August early September, with females passing on average 5 days earlier than males. It is suggested that a different role of sexes concerning exhibition of territorial displays during the late breeding season, would explain differences between sex groups in timing of both moult and autumn migration.



中文翻译:

欧洲成年蜜b Pernis apivorus性别群体之间秋季迁徙的时机不同

欧洲蜂蜜秃鹰柏尼斯apivorus是欧洲的夏季游客,大部分在中西部非洲过冬。以前有关秋季移徙与性别群体关系的研究提供了相反的结果。尤其是,在瑞典南部进行的一项实地调查没有报告时间上的差异,而通过GPS跟踪的六名成年人,三名男性和三名女性的卫星研究表明,后者早些离开了。这项为期4年研究的目的是,在2016-2019年8月10日至9月30日之间,沿着墨西拿海峡进行观测,以进一步调查该物种的秋季迁徙时机,该海峡是地中海中部沿途的瓶颈。欧洲成年蜜b集中在8月下旬至9月上旬之间,而雌性的平均传播时间比雄性的平均提前5天。

更新日期:2021-03-18
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