| Authors |
Stryukov Stanislav Andreevich, Employee, department of nature, Ulyanovsk Regional Museum of Local Lore named after I. A. Goncharov (22 Spasskaya street, Ulyanovsk, Russia), E-mail: Stanislav_str@mail.ru
Korepov Mikhail Vladimirovich, Candidate of biological sciences, associate professor, sub-department of biology and chemistry, Ulyanovsk State Pedagogical University named after I. N. Ulyanov (4 100-letiya so dnya rozhdeniya V. I. Lenina square, Ulyanovsk, Russia), E-mail: botanika_ulspu@bk.ru
Ryzhenkina Nadezhda Aleksandrovna, Student, Ulyanovsk State Pedagogical University named after I. N. Ulyanov (4 100-letiya so dnya rozhdeniya V. I. Lenina square, Ulyanovsk, Russia), E-mail: egf_73@mail.ru
Kurochkina Natal'ya Alekseevna, Master degree student, Ulyanovsk State Pedagogical University named after I. N. Ulyanov (4 100-letiya so dnya rozhdeniya V. I. Lenina square, Ulyanovsk, Russia), E-mail: botanika_ulspu@bk.ru
Abdullina Vlada Valer'yanovna, Student, Ulyanovsk State Pedagogical University named after I. N. Ulyanov (4 100-letiya so dnya rozhdeniya V. I. Lenina square, Ulyanovsk, Russia), E-mail: egf_73@mail.ru
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| Abstract |
Background. The Imperial Eagle (Aquila heliaca, Savigny, 1809) is a rare vulnerable species of feathered predator. As part of the program to preserve the Volga population of the species in the territory of Ulyanovsk region, the monitoring of known nesting sites and the inventory of nesting biotopes are conducted annually. The purpose of the work is to study the productivity of the Volga population of the imperial eagle in Ulyanovsk region in 2018.
Materials and methods. During 2018, the authors we taking walking, cycling and road trips throughout the region examining with nesting-appropriate habitats to spot nests and monitoring of known nesting sites. The survey of nesting sites was carried out in two stages (spring and summer). The contents of the nests were studied using a quadrocopter.
Results. In 2018, in the territory of Ulyanovsk region, the breeding success and productivity of the imperial eagle were studied. 102 nesting sites were monitored. The nesting activity was detected in 51 nesting areas (50 %). Successful breeding was noted in 31 active nests (59,6 %), in which a total of 48 chicks were found. The greatest success of reproduction was noted in the Trans-Volga region and in the Zasyzran forest-steppe. The breeding success averaged 0,94 chicks per territorial pair. The total number of chicks of the imperial eagle, bred in 2018 in the territory of Ulyanovsk region, estimated 95–105 individuals.
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| References |
1. Koblik E. A., Arkhipov V. Yu. Zoologicheskie issledovaniya [Zoological research]. 2014, no. 14, pp. 108, 109. [In Russian]
2. Belik V. P., Galushin V. M. Zoologicheskiy zhurnal [Zoological journal]. 2019, vol. 98, no. 1, pp. 79–88. [In Russian]
3. Korepov M. V., Korepova D. A., Stryukov S. A. Problemy regional'noy ekologii [Problems of regional ecology]. 2015, no. 3, pp. 34–39. [In Russian]
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