Орлан-белохвост в Чувашии, Россия

• Main Authors: Исаков, Г., Яковлев, В.
• Format: Text
• Language: unknown
• Published: Общество с ограниченной ответственностью «Сибэкоцентр» 2008
• Subjects: ХИЩНЫЕ ПТИЦЫ; ПЕРНАТЫЕ ХИЩНИКИ; ОРЛАН-БЕЛОХВОСТ; Sura; Yar; Haliaeetus albicilla; White-tailed eagle; Орлан-белохвост
• Online Access: http://cyberleninka.ru/article/n/orlan-belohvost-v-chuvashii-rossiya; http://cyberleninka.ru/article_covers/14651927.png

Surveying birds in the Republic of Chuvashia since 1998 we have collected some data on the White-Tailed Eagle (Haliaeetus albicilla) presented in this short report. In the Republic we observed the White-tailed Eagle during breeding season and migrations on the Cheboksarskoe and Kuybyshevskoe water reservoirs and their vicinities (within 15 km from reservoirs), also eagles were regularly noted in the Sura river valley (Fig. 1). We know only breeding territory of the White-tailed Eagle in Chuvashia Knyazhskiy Yar on the Sura river. That pair is known to nest in the territory since 2003. (2 juveniles were found at the beginning of August). The nest was found in 2005 (Kalashnikova, 2005). It was a nest originally built by the Imperial Eagle (Aquila heliaca), which bred in Knyazhskiy Yar till 2002. A total of 2−4 pairs are estimated to breed in the territory of the Republic of Chuvashia. Following records in 1998−2007 51 individuals were recorded in the territory of the Republic of Chuvashia during spring migration, 82 birds were recorded during summer-autumn period. A total of 30−150 individuals are estimated to migrate in the spring and 100−300 individuals in the autumn through the territory of Chuvashia. The species has already noted in the winter last 5 years. Single birds were observed on the Cheboksarskoe water reservoir on 07.12.2003, near Sinyaly village on 19.12.2004, on the Kuybyshevskoe water reservoir on 14.01.2006, near Chandrovo village on 20.02.2008. The main reason of rarity of the White-tailed Eagleа in Chuvashia is small area of habitats of the species. We have recommended the White-tailed Eagleа to list in the category 1 in the Red Data Book of the Republic of Chuvashia. Surveying birds in the Republic of Chuvashia since 1998 we have collected some data on the White-Tailed Eagle (Haliaeetus albicilla) presented in this short report. In the Republic we observed the White-tailed Eagle during breeding season and migrations on the Cheboksarskoe and Kuybyshevskoe water reservoirs and their vicinities (within 15 km from reservoirs), also eagles were regularly noted in the Sura river valley (Fig. 1). We know only breeding territory of the White-tailed Eagle in Chuvashia Knyazhskiy Yar on the Sura river. That pair is known to nest in the territory since 2003. (2 juveniles were found at the beginning of August). The nest was found in 2005 (Kalashnikova, 2005). It was a nest originally built by the Imperial Eagle (Aquila heliaca), which bred in Knyazhskiy Yar till 2002. A total of 2−4 pairs are estimated to breed in the territory of the Republic of Chuvashia. Following records in 1998−2007 51 individuals were recorded in the territory of the Republic of Chuvashia during spring migration, 82 birds were recorded during summer-autumn period. A total of 30−150 individuals are estimated to migrate in the spring and 100−300 individuals in the autumn through the territory of Chuvashia. The species has already noted in the winter last 5 years. Single birds were observed on the Cheboksarskoe water reservoir on 07.12.2003, near Sinyaly village on 19.12.2004, on the Kuybyshevskoe water reservoir on 14.01.2006, near Chandrovo village on 20.02.2008. The main reason of rarity of the White-tailed Eagleа in Chuvashia is small area of habitats of the species. We have recommended the White-tailed Eagleа to list in the category 1 in the Red Data Book of the Republic of Chuvashia.