Location and size of breeding colonies of the Dalmatian Pelican Pelecanus crispus in the Trans-Urals and Western Siberia as of 2023
Vladimir V. Tarasov, Candidate of Biological Sciences, Associated Professor, Senior Researcher
Institute of Plant and Animal Ecology, Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russia, grouse@bk.ru, https://orcid.org/0000-0002-8576-3167
Abstract
In May — June 2023, a total census of the number of inhabited nests of the Dalmatian pelican Pelecanus crispus was carried out using a quadcopter in all water bodies of the Chelyabinsk, Kurgan and Tyumen regions, where its colonies were previously known. It was shown that since the 1980s, the number of the species in the region has grown exponentially and reached 1.6—1.7 thousand nesting pairs by the end of the 2010s. The analysis of published data allows us to conclude that a significant part of these birds migrated here from the drying up water bodies of Central and Northern Kazakhstan. After the 2021 avian flu epidemic, the population of the species in these regions was halved and as of 2023 numbered 880 pairs nesting in 6 water bodies. Over 85% of this number (about 760 pairs) remained on the territory of state reserves. The main nesting group of the species is currently concentrated in the Tyumen region, where 724 nesting pairs were counted on 4 lakes. The total number of the species in the Asian part of Russia is currently about 1 thousand pairs.
Key words
Aerial surveys, nesting settlement, Asian part of the Russian Federation, distribution, population fluctuations, range dynamics, nesting dates, environmental factors.
Acknowledgments: The author is very grateful to B. M. Chichkov for the opportunity to visit in 2023 almost all the nesting sites of the Dalmatian Pelican described in the article. The study was carried out within the framework of the state task of the Institute of Plant and Animal Ecology of the Ural Branch of the Russian Academy of Sciences (no. 122021000096-7)
For citation:
Tarasov V. V. Location and size of breeding colonies of the Dalmatian Pelican Pelecanus crispus in the Trans-Urals and Western Siberia as of 2023. Vestnik of Orenburg State Pedagogical University. Electronic Scientific Journal, 2024, no. 3 (51), pp. 75—91. DOI: https://doi.org/10.32516/2303-9922.2024.51.5.
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