Stopover Ecology of the European Turtle Dove (Streptopelia turtur), a Threatened Migratory Bird Species, after the Crossing of an Extended Ecological Barrier

Q4 Agricultural and Biological Sciences Western Birds Pub Date : 2023-04-26 DOI:10.3390/birds4020017
C. Barboutis, Anastasios Bounas, Elisabeth Navarrete, T. Fransson
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Abstract

Migratory routes, important stopover sites and wintering grounds for the Turtle Dove, a declining trans-Saharan migratory bird, are known mainly for populations in western and central Europe, but very little is known about birds using the eastern migration flyway. By combining long-term ringing data, tracking data and citizen science data, a comprehensive picture of the stopover ecology of the Turtle Dove’s spring migration in the eastern Mediterranean is presented. Furthermore, a quantitative estimate of the number of birds that migrate over Greece during the spring migration is given. Approximately 16% of the European population migrates through Greece, passing through as early as the end of March, with the passage lasting up to the end of May. On average, the species arrives depleted after the crossing of the Sahara Desert and the Mediterranean Sea, with no systematic refuelling event taking place in North Africa. Both tracking and ringing data indicate that the birds undergo an extensive stopover after the barrier crossing (as much as close to three weeks). Turtle Doves additionally show significant body mass gain during their stay, indicating the potential importance of stopover sites after the Mediterranean Sea for the conservation of the species.
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欧洲斑鸠(Streptopelia turtur)是一种受威胁的候鸟,跨越扩展的生态屏障后的中途停留生态学
斑鸠的迁徙路线,重要的中途停留地和越冬地,是一种日益减少的跨撒哈拉候鸟,主要分布在西欧和中欧,但对使用东部迁徙路线的鸟类知之甚少。结合长期的鸣铃数据、跟踪数据和公民科学数据,全面描绘了地中海东部斑鸠春季迁徙的中途停留生态。此外,给出了春季迁徙期间在希腊上空迁徙的鸟类数量的定量估计。大约16%的欧洲人口通过希腊移民,最早在3月底通过,一直持续到5月底。平均而言,这些物种在穿越撒哈拉沙漠和地中海后到达,没有系统的补充事件发生在北非。追踪和鸣叫数据都表明,这些鸟在跨越障碍后会进行一次大范围的停留(多达近三周)。斑鸠在停留期间还显示出显著的体重增加,这表明地中海之后的中途停留点对物种保护的潜在重要性。
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Western Birds
Western Birds Agricultural and Biological Sciences-Animal Science and Zoology
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